This is a list of characters in the universe of

Cartoon Network Cartoon Network (CN) is an American cable television television channel, channel and the flagship property of the Cartoon Network, Inc., a sub-division of the Warner Bros. Discovery Networks division of Warner Bros. Discovery. It launched on ...

's ''Ben 10'' franchise.

Overview

Television series

* This table shows the recurring characters and the actors who have portrayed them throughout the franchise. * A dark grey cell indicates the character was not in the series or film, or that the character's presence in the series or film has not yet been announced. * A indicates an appearance as a younger version of a pre-existing character. * A indicates a
cameo appearance A cameo appearance, also called a cameo role and often shortened to just cameo (), is a brief guest appearance of a well-known person or character in a work of the performing arts. These roles are generally small, many of them non-speaking on ...
. * A indicates an appearance in onscreen photographs only. * A indicates an appearance in deleted scenes only. * A indicates a motion-capture role. * A indicates an uncredited role.

Film series

* This table shows the recurring characters and the actors who have portrayed them throughout the franchise. * A dark grey cell indicates the character was not in the series or film, or that the character's presence in the series or film has not yet been announced. * A indicates an appearance as a younger version of a pre-existing character. * A indicates a
cameo appearance A cameo appearance, also called a cameo role and often shortened to just cameo (), is a brief guest appearance of a well-known person or character in a work of the performing arts. These roles are generally small, many of them non-speaking on ...
. * A indicates an appearance in onscreen photographs only. * A indicates an appearance in deleted scenes only. * A indicates a motion-capture role. * A indicates an uncredited role.

Main characters

Ben Tennyson

Benjamin Kirby “Ben” Tennyson (voiced by

Tara Strong Tara Lyn Strong (; born February 12, 1973) is a Canadian and American actress. She is known for her voice work in animation, websites, and video games. Strong's voice roles include animated series such as '' The Powerpuff Girls'', '' The Fair ...

as a child,

Yuri Lowenthal Yuri Lowenthal (born March 5, 1971) is an American voice actor known for his work in cartoons, anime, and video games. Some of his prominent voice roles in video games include Peter Parker / Spider-Man in various video games associated with t ...

as a teenager, portrayed by Graham Phillips in ''Race Against Time'' and

Ryan Kelley Ryan Jonathan Kelley (born August 31, 1986) is an American actor. He is known for his roles in '' Mean Creek'', '' Prayers for Bobby'', as Ben Tennyson in '' Ben 10: Alien Swarm'', and as Deputy Jordan Parrish on '' Teen Wolf''. Early life ...

in ''Alien Swarm'') is the main protagonist of the franchise. At the start of ''Ben 10'', he is a 10-year-old boy15 in ''Alien Force'' and 16 in ''Ultimate Alien'' and ''Universe'' from Bellwood who, during his summer vacation, discovers the Omnitrix, a prototype device that attaches to his wrist and allows him to transform into various aliens. He uses the Omnitrix to become a superhero while traveling across the United States. After the Omnitrix is destroyed at the end of ''Alien Force'', Ben retrieves the Ultimatrix from Albedo and uses it as a replacement before Azmuth gives him the official Omnitrix.

Gwen Tennyson

Gwen Tennyson (voiced by Meagan Smith in the original series,

Ashley Johnson Ashley Suzanne Johnson (born 1983) is an American actress. She became known as a child actor for her role as Chrissy Seaver on the sitcom ''Growing Pains'' (1990–1992). As an adult, her television roles include Amber Ahmed on '' The Killing' ...

in ''Alien Force'', ''Ultimate Alien'', and ''Omniverse'', Montserrat Hernandez in the reboot; portrayed by

Haley Ramm Haley Michelle Ramm (born March 26, 1992) is an American actress. She is known for her roles as Jen Long in the police procedural series ''Without a Trace'' (2007–2008), Brenna Carver in the Freeform (TV channel), ABC Family drama ''Chasing Li ...

in ''Race Against Time'' and

Galadriel Stineman Galadriel Stineman is an American actress and model. She is best known for her roles as Gwen Tennyson in '' Ben 10: Alien Swarm'' and as List of The Middle characters#Friends, Crushes and Classmates, Cassidy Finch in ''The Middle (TV series), Th ...

in ''Alien Swarm'') is Ben's paternal cousin. She is skilled in martial arts and possesses innate magical abilities due to her Anodite heritage.

Max Tennyson

Max Tennyson (voiced by

Paul Eiding Paul Eiding (born March 28, 1957) is an American actor, best known for his voice roles as Colonel Roy Campbell in the ''Metal Gear'' series, Perceptor in '' The Transformers'', and Max Tennyson in the '' Ben 10'' franchise. Early career Eiding ...

in the classic continuity, David Kaye in the reboot,

Adam Wylie Adam Augustus Wylie (born May 23, 1984) is an American actor, magician and a former Crayola spokesman. He played Zack Brock, the youngest son of Doctor and Sheriff Brock's children, on ''Picket Fences'' from 1992 to 1996. Wylie is also a voice ac ...

as a child,

Jason Marsden Jason Christopher Marsden (born January 3, 1975) is an American actor, director and producer, who has done numerous voice roles in animated films, as well as various television series and video games. He is best known for his voice roles as the ...

as a teenager; portrayed by

Lee Majors Lee Majors (born Harvey Lee Yeary; April 23, 1939) is an American actor. He portrayed the characters of Heath Barkley on the American television Western series '' The Big Valley'' (1965–1969), Colonel Steve Austin on the American television sc ...

in ''Race Against Time'' and

Barry Corbin Leonard Barrie Corbin (born October 16, 1940) is an American actor. He is best known for his starring role as Maurice Minnifield on the television series ''Northern Exposure'' (1990–1995), which earned him two consecutive Primetime Emmy Award ...

in ''Alien Swarm'') is Ben and Gwen's paternal grandfather. He is 60 years old in the original series, 65 in ''Alien Force'' and the reboot, 66 in ''Ultimate Alien'' and ''Omniverse'', 80 in ''Ben 10,000'' and 92 in ''Ken 10''.60 in ''Ben 10'', 65 in ''Ben 10: Alien Force'' and in the reboot, 66 in ''Ben 10: Ultimate Alien'' and in ''Ben 10: Omniverse'', 80 in ''Ben 10,000'' and 92 in ''Ken 10'' Despite his age, he is shown to be a capable fighter, and after Ben finds the Omnitrix, supports him any way he can. Max was once a candidate for the

Apollo 11 Apollo 11 was a spaceflight conducted from July 16 to 24, 1969, by the United States and launched by NASA. It marked the first time that humans Moon landing, landed on the Moon. Commander Neil Armstrong and Lunar Module pilot Buzz Aldrin l ...

mission and one of the leaders, or "Magisters", of the Plumber organization, but Ben and Gwen did not know of this at first, believing him to have been a literal plumber.

Kevin Levin

Kevin Levin (voiced by Michael Reisz in the classic series episode "Kevin 11",

Charlie Schlatter Charlie Schlatter is an American actor who has appeared in several films and television series. He is best known for his role as Dr. Jesse Travis, the resident student of Dr. Mark Sloan (played by Dick Van Dyke) on the CBS series '' Diagnosis: ...

in later episodes of the classic series, and

Greg Cipes Gregory Michael Cipes (born January 4, 1980) is an American actor. He is best known for his voice roles as Beast Boy in ''Teen Titans'', ''Teen Titans Go!,'' '' Young Justice'', and ''Beast Boy: Lone Wolf''; Michelangelo in ''Teenage Mutant Nin ...

in subsequent series; portrayed by Nathan Keyes in ''Alien Swarm'') is a mutant human who can absorb matter, energy, and DNA and initially appears in the original series as an 11-year-old16 in ''Ben 10: Alien Force'', 17 in ''Ben 10: Ultimate Alien'' (through present) boy and one of Ben's enemies. However, he later reforms and becomes Ben's best friend and Gwen's love interest. In the reboot, Kevin lacks powers and instead wields the Antitrix, a duplicate of the Omnitrix that Vilgax helped him build. The Antitrix aliens are corrupted versions of the Omnitrix aliens who are spliced with DNA of other unidentified species.

Rook Blonko

Rook Blonko (voiced by

Bumper Robinson Larry Clarence "Bumper" Robinson II is an American actor. He is best known for his voice roles as Damas in ''Jak 3'', Bumblebee and Blitzwing on '' Transformers: Animated'' Rook Blonko and various other characters in '' Ben 10: Omniverse'', and Fa ...

) is a Revonnahgander Plumber who Max assigns to work with Ben after Gwen and Kevin leave Bellwood for college. Rook is a top Plumber Academy graduate and skilled fighter who wields the Proto-tool, a shapeshifting weapon that can transform into various tools.

Glitch

Glitch (voiced by

) is a character originating from the reboot continuity and a human-Galvanic Mechamorph hybrid who was created after Ben used Upgrade to enhance the Omnitrix. He is initially trapped in the Omnitrix before Ben frees him in the episode "Innervasion". Vilgax kills Glitch in '' Ben 10 Versus the Universe: The Movie'', though Phil promises to recover his remains and resurrect him. In a potential future depicted in the episode "Ben 10,010", Glitch is converted into a drone-like form dubbed Hitch.

Secondary characters

Plumbers

The Plumbers are an intergalactic police force. While some work on Earth, most work in different parts of the universe. Among the known Plumbers are: * Magister Labrid (voiced by

Jeff Bennett Jeff Bennett (born October 2, 1962) is an American voice actor. He voiced the titular character of ''Johnny Bravo'', Dexter and Dee Dee's Dad in ''Dexter's Laboratory'', List of The Powerpuff Girls characters#Ace, Ace, List of The Powerpuff Gi ...

) is an Aquarian Plumber who recruited Max into the group. In the ''Alien Force'' pilot episode "Ben 10 Returns", Labrid is killed in battle with the Forever Knights. * Magister Prior Gilhil (voiced by J. K. Simmons) is Max Tennyson's superior and the guardian of several hundred planets. He is later killed by Aggregor. * Magister Patelliday (voiced by

Rob Paulsen Robert Frederick Paulsen III (born March 11, 1956) is an American voice actor and voice director, known for his roles in numerous animated television series and films. He received a Daytime Emmy Award for Outstanding Performer in an Animated Pro ...

) is a Pisciss Volann Plumber and the second-in-command of the Plumbers on Earth. * Magister Hulka (voiced by

Miguel Ferrer Miguel José Ferrer (February 7, 1955 – January 19, 2017) was an American actor. His breakthrough role was as Bob Morton in the 1987 film ''RoboCop''. Other film roles include Harbinger in '' Hot Shots! Part Deux'' (1993), Quigley in '' Blank ...

) is a drill instructor at the Plumbers' Academy.

Plumber's Helpers

This group is composed of the children of Plumbers, most of whom are superpowered alien-human hybrids.

Cooper

Cooper (voiced by

Cathy Cavadini Catherine Cavadini is an American voice actress. She is most well known as the original voice of Blossom on Cartoon Network's short series '' What a Cartoon!'' and the animated television series '' The Powerpuff Girls'', and as Tanya Mousekewi ...

in the original series, Corey Padnos in ''Alien Force'',

Chris Pratt Christopher Michael Pratt (born June 21, 1979) is an American actor. His films as a leading actor have grossed over $14.1billion worldwide, making him the fifth-highest-grossing film star of all time. Pratt was named by ''Time'' as one of t ...

in ''Ultimate Alien'',

Eric Bauza Eric Bauza (born December 7, 1979) is a Canadian voice actor based in the United States. He is mostly known for voicing several ''Looney Tunes'' characters, for which he won three Emmy Awards for his performances in '' Looney Tunes Cartoons'' (20 ...

in Omniverse) is a mutant human who can manipulate machines.

Alan Albright

Alan Albright (voiced by

Zeno Robinson Zeno Anthony Robinson (born October 25, 1993) is an American voice actor. His most notable roles include Cyborg/Victor Stone in ''Young Justice'', Hawks in ''My Hero Academia'' (for which he won Best VA Performance (EN) at the 2021 Anime Awa ...

in ''Alien Force'' and ''Ultimate Alien'',

in ''Omniverse'') is a Pyronite hybrid who can return to his human form at will, unlike the other Plumbers' Helpers.

Helen Wheels

Helen Wheels (voiced by

Juliet Landau Juliet Rose Landau (born March 30, 1965) is an American actress, director, producer, and ballerina best known for her role as Drusilla on ''Buffy the Vampire Slayer'' and its spinoff show ''Angel'', the latter appearance earning her a Sat ...

) is a Kineceleran hybrid and friend of Manny. The two formerly hunted aliens before realizing their wrongs and reforming.

Manny Armstrong

Manny Armstrong (voiced by

Khary Payton Khary Payton (born May 16, 1972) is an American actor. He is known for his roles as King Ezekiel on the AMC horror drama series '' The Walking Dead'' and Dr. Terrell Jackson on the soap opera ''General Hospital'', as well as voicing Cyborg acr ...

) is a Tetramand hybrid and friend of Helen. The two formerly hunted aliens before realizing their wrongs and reforming.

Pierce Wheels

Pierce Wheels (voiced by

) is a hybrid of Argit's species and Helen's adoptive brother. In ''Ultimate Alien'', he is killed during the Forever Knights' purge of aliens on Earth.

Lucy Mann

Lucy Mann (voiced by Tara Strong) is a Lenopan, a slimy shapeshifting alien and Ben's cousin-in-law.

Julie Yamamoto

Julie Yamamoto (voiced by Vyvan Pham) is an Asian-American tennis player and one of Ben's love interests. She is commonly accompanied by Ship (also voiced by Pham), a dog-like Galvanic Mechamorph who can transform into a powered armor suit.

Kai Green

Kai Green (voiced by Bettina Bush) is a Native American and one of Ben's love interests. In a potential future depicted in ''Omniverse'', Ben and Kai are married and have a son named Kenny.

Azmuth

Azmuth (voiced by Robert David Hall in the original series,

in ''Alien Force'' and ''Ultimate Alien'',

René Auberjonois René Marie Murat Auberjonois ( ; June 1, 1940 – December 8, 2019) was an American actor and voice actor, known for playing Odo on '' Star Trek: Deep Space Nine'' (1993–1999) and Clayton Endicott III on '' Benson'' (1980–1986). He firs ...

in ''Omniverse'', David Kaye in the reboot) is a Galvan and the creator of the Omnitrix. Furthermore, Galvan scientists under Azmuth's leadership accidentally created the Galvanic Mechamorphs during an experiment.

Professor Paradox

Professor Paradox (voiced by

David McCallum David Keith McCallum (19 September 1933 – 25 September 2023) was a Scottish actor and musician, based in the United States. He gained wide recognition in the 1960s for playing secret agent Illya Kuryakin in the television series '' The Man fr ...

) is a scientist who was displaced from time following a portal accident and developed the ability to manipulate time. Paradox uses the Chrononavigator to traverse space and time, which initially appears in the series as a

pocket watch A pocket watch is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist. They were the most common type of watch from their development in the 16th century until wristwatches became popula ...

Jimmy Jones

J. Jonah "Jimmy" Jones (voiced by

Scott Menville Scott David Menville (born February 12, 1971) is an American actor and musician who is known for his voice work in animated films, television series and video games. He voices Robin in Cartoon Network's ''Teen Titans'' (2003–2006) and ''Teen ...

) is a fan of Ben who exposed his secret identity to the world in ''Ultimate Alien''. He is named in reference to the Marvel Comics character J. Jonah Jameson.Written by

Dwayne McDuffie Dwayne Glenn McDuffie (February 20, 1962February 21, 2011) was an American writer of comic books and television. He co-founded the pioneering minority-owned-and-operated comic book company Milestone Media, which focused on underrepresented minori ...

(April 23, 2010). " Fame" —

Audio commentary An audio commentary is an additional audio track, usually digital, consisting of a lecture or comments by one or more speakers, that plays in real time with a video. Commentaries can be serious or entertaining in nature, and can add informatio ...

. '' Ben 10: Ultimate Alien''.

Season 1 Season One may refer to: Albums * ''Season One'' (Suburban Legends album), 2004 * ''Season One'' (All Sons & Daughters album), 2012 * ''Season One'' (Saukrates album), 2012 See also * * * Season 2 (disambiguation) Season 2 may refer to: ...

Aggregor's Prisoners

Aggregor's prisoners (also called the Andromeda Five) are a group of aliens from the

Andromeda Galaxy The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged as Messier 31, M31, and NGC 224. Andromeda has a Galaxy#Isophotal diameter, D25 isop ...

who Aggregor captured to absorb their powers and claim the Map of Infinity. They consist of the Orishan Bivalvan, the Prypiatosian-B P'andor, the Talpaedan Andreas, and the Amperi Ra'ad (all voiced by

Dee Bradley Baker Dee Bradley Baker (born August 31, 1962) is an American voice actor. Much of his work has consisted of vocalizations of animals and monsters. Baker's roles include animated series such as '' Adventure Time'', ''American Dad!'', '' Avatar: The Las ...

), and the Geochelone Aerio Galapagus (voiced by

John DiMaggio John William DiMaggio ( ; born September 4, 1968) is an American actor. His various voice roles include Bender on ''Futurama'', Jake the Dog on ''Adventure Time'', Marcus Fenix in the ''Gears of War'' series, Dr. Drakken on '' Kim Possible'', ...

Sir George

Sir George (voiced by Peter Renaday) is an immortal knight who founded the Forever Knights to combat Dagon. In ''Ultimate Alien'', he reunites the Knights to achieve this goal, but is killed after Dagon removes his immortality.

Alternate versions of Ben

Ben 23

Ben 23 (voiced by

) is an alternate universe variant of Ben from Dimension 23 who became a misguided celebrity due to his version of Max dying early. He initially believes all aliens to be evil before the prime Ben convinces him otherwise. Additionally, his alien transformations are predominantly blue rather than green and have different names than the prime Ben.

Ben 10,000

Ben 10,000 (voiced by

Fred Tatasciore Fred Tatasciore ( , , born June 13, 1967) is an American voice actor who has provided voices in animated and live-action films, television shows, and video games. He is known for voicing the Hulk, Volstagg, and Beast in various Marvel media and ...

in the original series and reboot, Sean Donnellan in ''Ultimate Alien'', Judd Nelson in ''Omniverse'') is the name of several alternate future versions of Ben. The ''Ultimate Alien'' version of Ben 10,000 can use alien powers without transforming, while the ''Omniverse'' Ben 10,000 wields the Biomnitrix, a pair of Omnitrices that can transform him into alien hybrids.

Kenny Tennyson/Chrono Spanner

Ken Tennyson (voiced by

in the original series,

in ''Omniverse'') is Ben's future son. He initially wields a duplicate of the Omnitrix before he is grounded and has it taken away. Afterward, Ken obtains time-traveling technology from Professor Paradox and becomes Chrono Spanner.

Gwen 10

Gwen 10 (voiced by Meagan Smith in the original series,

in ''Omniverse'') is an alternate universe variant of Gwen who found the Omnitrix instead of Ben.

Other characters

Cash and JT

Cash and JT are Ben's old bullies from school. Cash is voiced by

in the original series, Matt Levin in ''Alien Force'' and ''Ultimate Alien'', and

Roger Craig Smith Roger Craig Smith is an American voice actor. He is known for his voice roles in video games such as Chris Redfield in the ''Resident Evil'' series (2009–2017), Ezio Auditore da Firenze in the ''Assassin's Creed'' series (2009–2011), Kyle C ...

in the reboot, and portrayed by Tyler Patrick Jones in ''Race Against Time''. JT is voiced by

in the original series,

in ''Alien Force'' and ''Ultimate Alien'', and

Max Mittelman Maxwell Braden Mittelman (born September 5, 1990) is an American voice actor who provides voices for English versions of anime, animation and video games. Early life Maxwell Braden Mittelman was born on September 5, 1990, in Los Angeles. He is ...

in the reboot, and portrayed by Tyler Foden in ''Race Against Time''.

Lt. Steel

Lt. Steel (voiced by

Michael Gough Francis Michael Gough ( ; 23 November 1916 – 17 March 2011) was a British actor who made more than 150 film and television appearances. He is known for his roles in the Hammer horror films from 1958, with his first role as Sir Arthur Holmwoo ...

in the original series,

in ''Omniverse'') is the leader of SECT, a

task force A task force (TF) is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy, the term has now caught on for general usage and is a standard part of NATO terminology. Many ...

that deals with alien criminals.

Tetrax Shard

Tetrax Shard (voiced by Dave Fennoy in the classic continuity,

Todd Haberkorn Todd Michael Haberkorn (born August 16, 1982) is an American voice actor and director, who has dubbed in anime, films, and video games. Some of his notable roles include Keroro from ''Sgt. Frog'', Allen Walker from '' D.Gray-man'', Death the ...

in the reboot) is a Petrosapien and former mercenary. He inadvertently helped Vilgax destroy Petropia, causing him immense guilt until the planet is restored in the '' Alien Force'' episode "The Secret of Chromastone". In the reboot, Tetrax is unaffiliated with Vilgax. He initially works with Kraab and SixSix before separating from them, with Kraab ripping off his left arm in a later fight.

Xylene

Xylene (voiced by

Grey DeLisle Grey DeLisle (; born Erin Grey Van Oosbree; August 24, 1973), sometimes credited as Grey Griffin, is an American voice actress and singer-songwriter. DeLisle is known for various roles in animated productions and video games. On September 27, ...

) is an Uxorite and friend of Max who sent the Omnitrix to Earth.

Galactic Enforcers

The Galactic Enforcers are a group of alien heroes. They consist of the

Superman Superman is a superhero created by writer Jerry Siegel and artist Joe Shuster, which first appeared in the comic book ''Action Comics'' Action Comics 1, #1, published in the United States on April 18, 1938.The copyright date of ''Action Comics ...

-like Ultimos (voiced by

Tom Kane Tom Kane (born 1962) is an American former voice actor. He is known for his work in animation and video games, most notably the ''Star Wars'' franchise. Career Kane began his voice acting career in 1977 when he was just 14 years old. Some of his ...

in the original series and

in ''Alien Force''), Synaptak (voiced by Greg Ellis), a psychic squid; and Tini (voiced by

Vanessa Marshall Vanessa Marshall is an American voice actress who is most active in films, cartoons and video games. Career Prior to her career as a voice actor, Marshall attended Princeton University, majoring in English. She then attended graduate school at ...

in the original series and

in ''Alien Force''), a Tetramand.

Myaxx

Myaxx (voiced by Vanessa Marshall in the original series, Vyvan Pham in ''Alien Force'') is a Chimera Sui Generis and Azmuth's former assistant.

Carl and Sandra Tennyson

Carl Tennyson (voiced by

in the original series,

Don McManus Don McManus (sometimes credited as Don R. McManus) is an American actor. Born in San Diego, California, he is a graduate of Yale University. Career McManus's film credits include ''Vice'', ''Grand Piano'', '' Under the Silver Lake'', '' The Ma ...

in ''Alien Force'' and ''Race Against Time'',

in ''Ultimate Alien'') and Sandra Tennyson (voiced by

in the original series, Vyvan Pham and

Beth Littleford Elizabeth Littleford (born July 17, 1968) is an American actress and comedian known as an original correspondent on Comedy Central's ''The Daily Show'' from 1996 to 2000. For performing on ''The Daily Show'', she won a Peabody Award in 2015. Ou ...

in ''Alien Force'', and Littleford alone in subsequent series) are Ben's parents.

Baz-El

Baz-El (voiced by

) is a Galvanic Mechamorph and Ship's father.

Verdona Tennyson

Verdona (voiced by

in her Anodite form,

Barbara Bain Barbara Bain (born Mildred Fogel, September 13, 1931 See also: * ) is an American actress. She is best known for her role as Cinnamon Carter Crawford on the action television series '' Mission: Impossible'' (1966–1969), which earned her thr ...

in her human form) is Ben and Gwen's Anodite grandmother.

Frank Tennyson

Frank Tennyson (voiced by

George Newbern George Newbern (born December 30, 1964) is an American actor, best known for his roles as Charlie in the American Broadcasting Company, ABC show ''Scandal (American TV series), Scandal'' (2012–2018) and Bryan MacKenzie in ''Father of the Bride ...

) is Gwen's father.

Natalie Tennyson

Natalie Tennyson (voiced by

) is Gwen's mother.

Reinrassig III

Reinrassig III (voiced by Richard McGonagle) is a Highbreed officer who later becomes the leader of the Highbreed. Ben gives Reinrassig a Methanosian arm after he loses it on the planet Turrawuste, causing him to be unaffected by Ben rewriting the genetic code of the other Highbreed.

Elena Valadis

Elena Valadis (portrayed by

Alyssa Diaz Alyssa Elaine Diaz (born September 7, 1985) is an American actress. She is known for her roles on television, such as Celia Ortega on the CBS daytime soap opera ''As the World Turns'', Jasmine on the ABC Family Channel, ABC Family series ''The N ...

in ''Alien Swarm'', voiced by

Tia Texada Tia Texada is an American actress and model. She is best known for her role as Sgt. Maritza Cruz on the NBC series ''Third Watch'', and her recurring role as undercover agent Ribera on '' The Unit'' for CBS. Other roles include '' In Plain Sight ...

in ''Ultimate Alien'') is Victor Valadis' daughter, who becomes the queen of the Microchips after they possess her.

Victor Valadis

Victor Valadis (portrayed by Herbert Sigüenza in ''Alien Swarm'', voiced by Brian George in ''Ultimate Alien'') is a former Plumber and Elena's father.

Colonel Rozum

Colonel Rozum (voiced by

) is an

Air Force An air force in the broadest sense is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army aviati ...

officer and a colleague of Max Tennyson.

Eunice

The Unitrix (voiced by Molly C. Quinn) is a prototype version of the Omnitrix that can replicate animal abilities. It obtains a humanoid form dubbed Eunice after absorbing Gwen's DNA.

Ignacius Baumann

Ignacius Baumann (voiced by Richard Doyle in ''Ultimate Alien'',

Corey Burton Corey Burton is an American voice actor. He is the current voice of Captain Hook, Ludwig Von Drake and others for The Walt Disney Company, Shockwave on '' The Transformers'', Brainiac in the DC Animated Universe, Count Dooku and Cad Bane in ...

in ''Omniverse'') is a storekeeper who sells alien provisions. He is the subject of a running gag where Ben accidentally destroys his businesses. In the ''Omniverse'' episode "The Ballad of Mr. Baumann", Baumann marries Sheelane, a mermaid-like alien.

Zed

Zed (vocal effects provided by

) is an Anubian Baskurr and Khyber's former hunting dog, who Kevin adopts after Khyber abandons her. She formerly wielded the Nemetrix, an Omnitrix-like device that enabled her to transform into various predatory species. In the fourth season of ''Omniverse'', Albedo upgrades the Nemetrix with an evolutionary feature similar to the Ultimatrix.

Nemetrix predators

* Buglizard is a lizard-like alien and Stinkfly's predator. It has enhanced agility and sense of smell and can generate fog that melts Stinkfly's slime. * Crabdozer is a rhinoceros/crab-like alien and Heatblast's predator. It has immense strength and fireproof rock-like skin. * Hypnotick is a moth-like alien and Big Chill's predator. It is immune to intense cold and can become intangible and generate hypnotic mist that forces others to see visions of their greatest desires. * Mucilator is a frog-like alien and Crashhopper's predator. It has immense strength and durability as well as adhesive sacs across its body. * Omnivoracious is a

ratite Ratites () are a polyphyletic group consisting of all birds within the infraclass Palaeognathae that lack keels and cannot fly. They are mostly large, long-necked, and long-legged, the exception being the kiwi, which is also the only nocturnal ...

-like alien and Gray Matter's predator. It is highly intelligent, leading Galvans to be unable to outwit it. The Omnivoracious species became extinct long ago following a meteor strike, with Khyber obtaining Omnivoracious DNA from a fossil. * Panuncian is a ''

Smilodon ''Smilodon'' is an extinct genus of Felidae, felids. It is one of the best known saber-toothed predators and prehistoric mammals. Although commonly known as the saber-toothed tiger, it was not closely related to the tiger or other modern cats ...

''-like alien and Ditto's predator. It is highly agile and possesses similar duplication abilities to its prey. Panuncian's Ultimate form is larger and possesses spiked armor. In the fourth season of ''Omniverse'', Khyber obtains a Panuncian to act as a

hunting dog A hunting dog is a Dog, canine that hunts with or for hunters. There are several different Dog type, types of hunting dog developed for various tasks and purposes. The major categories of hunting dog include hounds, terriers, cur type dogs, and ...

after Zed abandons him. * Slamworm is a worm-like alien and Armodrillo's predator. It can dig at high speeds and possesses acidic saliva and a sharp beak, both of which are adapted to destroy Talpaedan armor. * Terroranchula is a tarantula-like alien and Ball Weevil's predator. It has sharp, powerful legs and can generate energy webs that destroy Insectoid slime. * Tyrannopede is a dinosaur/insect-like alien and Humungousaur's predator. It has immense strength and durability and can generate webbing from its horn. * Vicetopus is an octopus-like alien and Brainstorm's predator. It has a rubbery body that makes it elastic and resistant to electricity.

Pakmar

Pakmar (voiced by

) is an alien shopkeeper who resides in Undertown. He is the subject of a running gag where Ben accidentally destroys his businesses.

Professor Blarney T. Hokestar

Blarney Hokestar (voiced by

Charlie Adler Charles Michael Adler (born October 2, 1956) is an American voice actor and voice director. He is known for his roles as Buster Bunny on ''Tiny Toon Adventures'', the Bigheads on ''Rocko's Modern Life'', Ickis on ''Aaahh!!! Real Monsters'', Doc ...

) is an alien con artist and smoothie seller.

Pax

Pax (voiced by

) is a Florauna animal lover and alien rights activist.

Kraaho

The Kraaho are hot-blooded

tungsten Tungsten (also called wolfram) is a chemical element; it has symbol W and atomic number 74. It is a metal found naturally on Earth almost exclusively in compounds with other elements. It was identified as a distinct element in 1781 and first ...

-based aliens who thrive in warm temperatures.

Seebik

Seebik (voiced by

) is a thief and the former leader of the Kraaho.

Ester

Ester (voiced by

Tara Platt Tara Platt (born June 18, 1978) is an American actress and author who has provided voices for dozens of English-language versions of Japanese anime films, television series and video games. Her notable roles in anime include Temari (Naruto), Tem ...

) is the current leader of the Kraaho and one of Ben's love interests.

Hobble

Hobble (voiced by

Steve Blum Steven Jay Blum (; born April 29, 1960) is an American voice actor. Known for his distinctively deep voice, his roles include Spike Spiegel from the anime series ''Cowboy Bebop''; Amon from ''The Legend of Korra''; Heatblast, Ghostfreak, and ...

) is an insect-like alien and a member of the Plumbers' Alpha Squad.

Rad Dudesman

Rad Dudesman (voiced by

Carlos Alazraqui Carlos Jaime Alazraqui (born July 20, 1962) is an American actor. His voice acting roles include the original voice of Spyro from '' Spyro the Dragon'', the Taco Bell chihuahua in the Taco Bell commercials, Rocko on ''Rocko's Modern Life'', D ...

) is a duck-like alien mercenary.

Pyxi

Pyxi (voiced by Carlos Alazraqui) is Rad's AI assistant.

Scout

Scout (voiced by Carlos Alazraqui) is a Loboan Plumber stationed in the Anur System.

Skurd

Skurd (voiced by David Kaye) is a Slime-biot, a squid-like alien who can manipulate DNA. He assists Ben before leaving him to return to his creators, the Contumelia.

Omnitrix aliens

Heatblast

Heatblast (voiced by

in the original series, David Franklin in ''Race Against Time'',

in ''Ultimate Alien'', David Kaye in ''Omniverse'',

Daryl Sabara Daryl Christopher Sabara (born June 14, 1992) is an American actor. He is known for portraying Juni Cortez in the ''Spy Kids'' film series, and for a variety of television and film appearances, first as a child actor and continuing into adult r ...

in the reboot) is a Pyronite, a fiery rock-based alien from the planet Pyros. He can generate and manipulate fire and fly by levitating rock.

Wildmutt

WIldmutt (voiced by

) is a Vulpimancer, a dog-like alien from the planet Vulpin. He is blind and incapable of speech, but has enhanced senses, including smell and hearing. Ultimate Wildmutt (also voiced by Baker) is red and capable of speech.

Diamondhead

Diamondhead (voiced by Jim Ward in the original series,

Daran Norris Daran Morrison Nordland (born November 1, 1964), known professionally as Daran Norris, is an American actor. He has appeared or voiced characters in more than 400 films, video games, and television programs, including: Gordy in '' Ned's Declassif ...

in ''Race Against Time'',

in ''Alien Force'' and ''Ultimate Alien'',

in ''Omniverse'',

in the reboot) is a Petrosapien, a humanoid silicon-based alien from the planet Petropia. He has a crystal-based body that enables him to generate crystals and transform his limbs into various weapons.

XLR8

XLR8 (voiced by Jim Ward in the original series,

in ''Omniverse'', Josh Keaton in the reboot) is a Kineceleran, a raptor-like alien from the planet Kinet. He can move at superhuman speeds by lowering his own friction and create vortexes by running in circles.

Grey Matter

Grey Matter (voiced by

Richard Steven Horvitz Richard Steven Horvitz (born July 29, 1966) is an American actor and comedian, best known for his voice work in animation and video games. His voice credits include the original Alpha 5 on '' Mighty Morphin Power Rangers'', '' Power Rangers Zeo ...

in the original series,

in ''Race Against Time'',

in ''Omniverse'',

in the reboot) is a Galvan, a frog-like alien from the planet Galvan Prime. He is small and physically weak, but has enhanced intelligence that makes him skilled with machines.

Four Arms

Four Arms (voiced by Richard McGonagle in the original series,

in ''Ultimate Alien'',

in ''Omniverse'' and the reboot) is a Tetramand, a red four-armed alien from the planet Khoros. He has immense strength and can create shockwaves by clapping his hands.

Stinkfly

Stinkfly (voiced by

in the classic continuity,

in the reboot) is a Lepidopterran, an insect-like alien from the planet Lepidopterra. He can fly at high speeds and generate adhesive slime with various properties. In the reboot, Stinkfly is redesigned to resemble a humanoid dragonfly.

Ripjaws

Ripjaws (voiced by

in the original series,

in ''Omniverse'') is a Pisciss Volann, a fish-like alien from the water planet Pisciss. He can swim at high speeds and possesses a powerful bite, but is incapable of surviving outside water.

Upgrade

Upgrade (voiced by

in the original series,

in ''Heroes United'' and ''Omniverse'',

David Sobolov David Sobolov (born October 23, 1964) is a Canadian voice actor and director, best known for his roles as Gorilla Grodd in various DC media, Drax the Destroyer in various Marvel media, Kaido in ''One Piece'', and various characters in the ''Tran ...

in the reboot) is a Galvanic Mechamorph, a humanoid mechanical alien from the moon Galvan B. His body is made of nanites that enable him to reshape his body and possess technology.

Ghostfreak

Ghostfreak (voiced by

in the original series and ''Omniverse'',

in ''Alien Force'' and ''Ultimate Alien'') is an Ectonurite, a ghost-like alien from the planet Anur Phaetos. He has various abilities, including invisibility, intangibility, and possession. An Ectonurite's consciousness can exist even in a few strands of DNA, leading to the unique situation of a consciousness being trapped inside the Omnitrix.

Cannonbolt

Cannonbolt (voiced by

in the original series,

in ''Alien Force'' and ''Ultimate Alien'', David Kaye in ''Omniverse'',

Travis Willingham Travis Willingham is an American voice actor known for his character portrayals in video games and English anime Dubbing, dubs. His notable roles include Roy Mustang in the ''Fullmetal Alchemist'' franchise, Cleo in ''Glass Fleet'', Ginko in ''L ...

in the reboot) is an Arburian Pelarota, a pillbug-like alien from the destroyed planet Arburia. He can roll into a ball, making him nigh-invulnerable and enabling him to bounce at high speeds. Ultimate Cannonbolt (also voiced by Baker in ''Ultimate Alien'') has a gray shell covered in spikes that he can shoot as projectiles.

Wildvine

Wildvine (voiced by Jim Ward in the original series,

in ''Omniverse'', David Hornsby in the reboot) is a Florauna, a humanoid plant-based alien from the planet Flors Verdance. He has an elastic body and can generate and manipulate plants.

Spitter

Spitter (voiced by

) is a Sphoeroid, a pufferfish-like alien from the planet Scalpasc. He can generate massive amounts of slime from his mouth.

Buzzshock

Buzzshock (voiced by

in the original series and reboot,

in ''Omniverse'') is a Nosedeenian, a battery-like alien from the Nosideen Quasar. He can generate and manipulate electricity, enabling him to transform into energy and possess machines.

Arctiguana

Arctiguana (voiced by

in the original series,

in ''Omniverse'') is a Polar Manzardill, a lizard-like alien from the planet X'Nelli. He can generate ice and fly by using it as propulsion. Arctiguana's Ultimate form (also voiced by Bauza in ''Omniverse''), used by Albedo, is larger and possesses shoulder-mounted ice cannons.

Blitzwolfer

Blitzwolfer (voiced by

in the original series,

Kevin Michael Richardson Kevin Michael Richardson (born October 25, 1964) is an American actor. Known for his distinctively deep voice, he has mostly voiced villainous characters in animation and video games. In film, Richardson voiced Goro in ''Mortal Kombat'' (1995) ...

in ''Omniverse'') is a Loboan, a wolf-like alien from the moon Luna Lobo. He has enhanced physical abilities and can generate sonic howls by splitting his jaw.

Snare-oh

Snare-oh (voiced by Richard Green in the original series,

in ''Omniverse'') is a Thep Khufan, a mummy-like alien from the planet Anur Khufos. His body is made of elastic bandages, enabling him to stretch and disassemble his body at will.

Frankenstrike

Frankenstrike (voiced by

Michael Dorn Michael Dorn (born December 9, 1952) is an American actor best known for his role as the Klingon character Worf in the ''Star Trek'' franchise, appearing in all seven seasons of the television series '' Star Trek: The Next Generation'' (1987–1 ...

in the original series, David Kaye in ''Omniverse'') is a Transylian, a

Frankenstein ''Frankenstein; or, The Modern Prometheus'' is an 1818 Gothic novel written by English author Mary Shelley. ''Frankenstein'' tells the story of Victor Frankenstein, a young scientist who creates a Sapience, sapient Frankenstein's monster, crea ...

-like alien from the planet Anur Transyl. He can generate electricity and control machinery via the plugs on his shoulders.

Upchuck

Upchuck (voiced by

Dave Wittenberg Dave Wittenberg is a South African-born American voice actor and scriptwriter. Early life Wittenberg was born in Johannesburg, South Africa. He was raised in the Boston area. Career Wittenberg voices Kakashi Hatake, the 6th Hokage in ''Naruto ...

in the original series,

in ''Alien Force'' and ''Ultimate Alien'',

in ''Omniverse'') is a Gourmand, a reptilian alien from the planet Peptos XII. He has multiple prehensile tongues that enable him to ingest most forms of matter and expel it as energy projectiles.

Ditto

Ditto (voiced by

) is a Splixson, a mole-like alien from the planet Hathor. He is highly agile and can duplicate himself via

binary fission Binary may refer to: Science and technology Mathematics * Binary number, a representation of numbers using only two values (0 and 1) for each digit * Binary function, a function that takes two arguments * Binary operation, a mathematical o ...

Eye Guy

Eye Guy (voiced by

in the original series,

in ''Omniverse'') is a Opticoid, a humanoid boneless alien from the planet Sightra. He has numerous eyes across his body from which he can project elemental beams.

Way Big

Way Big (voiced by

in the original series,

in ''Alien Force'' and ''Ultimate Alien'',

in ''Omniverse'',

in the reboot) is a To'kustar, a colossal humanoid alien that has no home planet and is born in cosmic storms. He has immense strength and can generate cosmic energy beams. His Ultimate form (also voiced by Baker in ''Ultimate Alien'') has increased size and a red and blue color scheme, often regarded as an homage to ''

Ultraman The , also known as ''Ultraman'', is a Japanese science fiction media franchise owned and produced by Tsuburaya Productions, which began with the television series '' Ultra Q'' in 1966. The franchise has expanded into many television shows, fi ...

''.

Eon

Eon (portrayed by

Christien Anholt Christien Alexis Anholt (born 25 February 1971) is an English stage, television and film actor best known for portraying Nigel Bailey in the television series '' Relic Hunter''. Early life Anholt was born in London. He is the son of Anthony ...

) is a Chronian, a humanoid alien from the planet Chronia. Eon forces Ben to transform into a Chronian to power the Hands of Armageddon.

Introduced in ''Alien Force''

Swampfire

Swampfire (voiced by

) is a Methanosian, a plant-like humanoid from the planet Methanos. He can generate fire and manipulate plants. In ''Omniverse'', Swampfire undergoes a puberty-like process, gaining enhanced abilities and a red and yellow color scheme. Ultimate Swampfire (also voiced by Baker) resembles a tree and has blue

napalm Napalm is an incendiary mixture of a gelling agent and a volatile petrochemical (usually gasoline or diesel fuel). The name is a portmanteau of two of the constituents of the original thickening and gelling agents: coprecipitated aluminium ...

-like sacs across his body.

Echo Echo

Echo Echo (voiced by

) is a Sonorosian, a robot-like alien from the planet Sonorosia. He can duplicate himself and manipulate sound. His Ultimate form (also voiced by Baker) has the ability to fly and wields sonic discs that amplify his sound blasts, however is unable to duplicate.

Humungousaur

Humungousaur (voiced by

in ''Alien Force'' and ''Ultimate Alien'',

in ''Omniverse'', David Kaye in the reboot) is a Vaxasaurian, a dinosaur-like alien from the planet Terradino. He has immense size and strength and can grow further, up to a maximum of 60 feet. Ultimate Humungousaur (voiced by Baker in ''Alien Force'' and ''Ultimate Alien'' and DiMaggio in ''Omniverse'') is green, has a spiked shell, and can shoot bony bullets from his hands.

Jetray

Jetray (voiced by

) is an Aerophibian, a

manta ray Manta rays are large Batoidea, rays belonging to the genus ''Mobula'' (formerly its own genus ''Manta''). The larger species, ''Giant oceanic manta ray, M. birostris'', reaches in width, while the smaller, ''Reef manta ray, M. alfredi'', reac ...

-like alien from the planet Aeropela. He can fly at faster-than-light speeds and generate energy beams known as "neuroshocks".

Big Chill

Big Chill (voiced by

) is a Necrofriggian, a moth-like alien from the planet Kylmyys. He can fly, generate ice, and become intangible. His Ultimate form (also voiced by Baker) is red and can generate plasma beams.

Chromastone

Chromastone (voiced by

in ''Alien Force'', ''Ultimate Alien'', and the reboot,

in ''Omniverse'') is a Crystalsapien, a humanoid crystal-based alien from the planet Petropia. Crystalsapiens are a unique species with only one member, Sugilite, who protects Petropia. Chromastone can manipulate and redirect energy as rainbow blasts.

Brainstorm

Brainstorm (voiced by

in ''Alien Force'' and ''Ultimate Alien'',

in ''Omniverse'') is a Cerebrocrustacean, a crab-like alien from the planet Encephalonus IV. He is highly intelligent and can generate electricity, enabling him to levitate himself and others.

Spidermonkey

Spidermonkey (voiced by

) is an Arachnichimp, an alien from the planet Aranhascimmia who resembles a monkey with multiple arms and eyes. He is highly agile and can generate large amounts of webbing. Ultimate Spidermonkey (voiced by Baker in ''Ultimate Alien'' and

in ''Omniverse'') resembles a large purple gorilla with spider legs and can generate webs from his mouth.

Goop

Goop (voiced by

) is a Viscosian, a humanoid slime-based alien from an unidentified planet. He has a malleable, slime-like body with shapeshifting capabilities and can generate acid. Goop uses his Anti-Gravity Projector to be fully mobile on planets that have gravity.

Alien X

Alien X (voiced by

in the classic continuity,

in the reboot) is a Celestialsapien, a humanoid alien from the Forge of Creation, a region outside the universe. Alien X has vast reality-warping abilities coupled with two split personalities, Bellicus (voiced by

Kevin Conroy Kevin Conroy (November 30, 1955 – November 10, 2022) was an American actor. He appeared in a variety of stage performances, television series, and television films. Conroy earned fame for voicing the DC Comics superhero Batman in various anim ...

in ''Alien Force'',

in ''Ultimate Alien'', and

in Omniverse) and Serena (voiced by

Vicki Lewis Vicki Lewis (born March 17, 1960) is an American actress and singer. She is best known for her role as Beth in the NBC sitcom ''NewsRadio''. She is also well known for her roles as Deb and Flo in ''Finding Nemo'' and '' Finding Dory'', April Smu ...

in ''Alien Force'',

in ''Ultimate Alien'', and

Kimberly Brooks Kimberly Brooks is an American voice actress. Brooks has voiced characters in video games since the mid-1990s. She has played the voice of Luna in the ''Scooby-Doo'' franchise as part of The Hex Girls, Ashley Williams in the ''Mass Effect'' s ...

in Omniverse) , who prevent him from acting until Ben convinces them to. Theoretically, Alien X possesses limitless power, as any thought Alien X conceives can be transformed into reality if all split personalities agree. Alien X is widely considered as the most powerful transformation within the Omnitrix.

Lodestar

Lodestar (voiced by

) is a Biotsavartian, a humanoid metallic alien from the planet Maxwell. He can manipulate magnetism, enabling him to levitate objects and fly by magnetizing himself.

Rath

Rath (voiced by

in the classic continuity,

in the reboot, and Bill Rogers in the video game ''Ben 10: Power Trip'') is an Appoplexian, a tiger-like alien from the planet Appoplexia. He has immense strength and durability coupled with uncontrollable aggression. Ultimate Rath (also voiced by DiMaggio in ''Omniverse''), used by Albedo, is larger and inspired by Marvel Comics character

Kraven the Hunter Kraven the Hunter (Sergei Nikolaevich Kravinoff; Russian: Сергей Николаевич Кравинов) is a supervillain appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist Steve Ditko, th ...

Nanomech

Nanomech (voiced by

Alex Winter Alexander Winter (born 1965) is a British-born American actor and filmmaker. As an actor, he is best known for playing Bill S. Preston, Esq., in the 1989 film '' Bill & Ted's Excellent Adventure'' and its sequels '' Bill & Ted's Bogus Journey' ...

in ''Alien Swarm'',

in ''Ultimate Alien'' and ''Omniverse'') is a Microchip that was uniquely created by the Omnitrix. Unlike other Microchips, he has a humanoid, insect-like body due to being half-human and half-microchip. Nanomech can shrink to microscopic sizes and generate energy blasts from his eyes and hands.

Introduced in ''Ultimate Alien''

Waterhazard

Waterhazard (voiced by

) is an Orishan, a mollusc-like alien from the planet Kiusana. He can manipulate pre-existing water, expel it as pressurized blasts, and fly by using water as propulsion.

Ampfibian

Ampfibian (voiced by

in ''Ultimate Alien'' and the reboot,

in ''Omniverse'') is an Amperi, a squid-like alien from the planet Tesslos. He has various abilities, including electrokinesis, intangibility, and telepathy.

Armodrillo

Armodrillo (voiced by

in ''Ultimate Alien'',

in ''Omniverse'') is a Talpaedan, an armodillo-like alien from the planet Poiana Lüncas. He has drill-like arms that enable him to drill at high speeds and create shockwaves.

Terraspin

Terraspin (voiced by

in ''Ultimate Alien'',

in ''Omniverse'') is a Geochelone Aerios, a turtle-like alien from the planet Aldabra. He can generate powerful gusts of wind and fly by retracting his limbs and assuming a helicopter-like stance.

NRG

NRG (voiced by

) is a Prypiatosian-B, an energy-based alien from the planet Prypiatos. He is highly radioactive and wears a containment suit to prevent his passive radiation from harming others. When NRG is outside of his containment suit his radioactive energy blasts and attacks are much more powerful and is able to fly.

Fasttrack

Fasttrack (voiced by

) is a Citrakayah, a cat-like alien from the planet Chalybeas. He can move at superhuman speeds, similar to XLR8.

Chamalien

Chamalien (voiced by

) is a Merlinisapien, a chameleon-like alien from an unidentified planet. He is highly agile and can become invisible.

Eatle

Eatle (voiced by

in ''Ultimate Alien'',

in ''Omniverse'') is an Oryctini, a beetle-like alien from the planet Coleop Terra. Similar to Upchuck, Eatle is able to ingest all sorts of different material and converts that into energy beams.

Clockwork

Clockwork (voiced by

) is a Chronosapien, a robotic alien from an unidentified planet. He can manipulate time, enabling him to rapidly age others and view the past. Furthermore, Clockwork has the ability to slow down time around him while still being able to move at a regular speed, making it appear to others as though he is moving extremely rapid.

Juryrigg

Juryrigg (voiced by

in ''Ultimate Alien'',

in ''Omniverse'') is a Planchaküle, a gremlin-like alien from the planet Aul-Turrhen. He has innate engineering abilities and can disassemble and reassemble machinery into new forms.

Shocksquatch

Shocksquatch (voiced by David Kaye) is a Gimlinopithecus, a yeti-like alien from the planet Pattersonea. He can generate and manipulate electricity, enabling him to shield himself from radiation.

Introduced in ''Omniverse''

Feedback

Feedback (voiced by

) is a Conductoid, a black humanoid alien from the Teslavorr Nebula. He has plug-like fingers and long antennae that enable him to absorb and redirect energy.

Bloxx

Bloxx (voiced by

in ''Omniverse'', David Kaye in the reboot) is a Segmentasapien, a primate-like alien from the planet Polyominus. He has an elastic body made of

Lego Lego (, ; ; stylised as LEGO) is a line of plastic construction toys manufactured by the Lego Group, a privately held company based in Billund, Denmark. Lego consists of variously coloured interlocking plastic bricks made of acrylonitri ...

-like bricks that can form various constructs and be shot as projeciles.

Gravattack

Gravattack (voiced by David Kaye) is a Galilean, a planet-like alien from the planet Keplorr. He can fly and manipulate gravity, enabling him to levitate himself and others. Ultimate Gravattack (also voiced by Kaye), used by Albedo, has three smaller planetoids orbiting him and lacks legs.

Crashhopper

Crashhopper (voiced by

) is an Orthopterran, a grasshopper-like alien from an unidentified planet. He has powerful legs that enable him to jump far and create shockwaves upon landing.

Ball Weevil

Ball Weevil (voiced by

) is an Insectoid, an insect-like alien from the planet Atrocious 0. He can generate adhesive balls of slime that can absorb matter and grow in size.

Walkatrout

Walkatrout (voiced by

) is a Ickthyperambuloid, a fish-like alien from the planet Gilli-Perambulous Promenade. He is physically weak, with his only power being slippery skin that makes him agile and difficult to grab.

Pesky Dust

Pesky Dust (voiced by

) is a Nemuina, a fairy-like alien from the planet Nemuinos IV. He can fly and generate dust that enables him to put others to sleep and manipulate their dreams.

Mole-Stache

Mole-Stache (voiced by David Kaye) is an unidentified mole-like alien from an unidentified planet. He has a prehensile mustache that can act as fists and enables him to fly by spinning like a helicopter.

The Worst

The Worst (voiced by

) is an Atrocian, a rotund alien from the planet Atrocian. He is highly durable and virtually indestructible, but is not immune to pain.

Kickin Hawk

Kickin Hawk (voiced by

) is an unidentified bird-like alien from an unidentified planet. He is highly skilled in hand-to-hand combat and has sharp blades on his elbows.

Toepick

Toepick (voiced by

) is an unidentified ogre-like alien from an unidentified planet. He has a terrifying face that can incapacitate others, which is usually covered by a cage-like helmet.

Astrodactyl

Astrodactyl (voiced by

) is a unidentified

Pterosaur Pterosaurs are an extinct clade of flying reptiles in the order Pterosauria. They existed during most of the Mesozoic: from the Late Triassic to the end of the Cretaceous (228 million to 66 million years ago). Pterosaurs are the earli ...

-like alien from the planet Terradino. He can fly at high speeds and can generate and manipulate stellar energy.

Bullfrag

Bullfrag (voiced by

) is an Incursean, a frog-like alien from an unidentified destroyed planet. He is highly agile and has a prehensile tongue. Bullfrag is extremely sensitive to strong odors.

Atomix

Atomix (voiced by

) is an unidentified robot-like alien from an unidentified planet. He has immense strength and can generate radiation.

Gutrot

Gutrot (voiced by

) is an unidentified robotic alien from an unidentified planet. He has a large, transparent stomach that enables him to create various forms of gas.

Whampire

Whampire (voiced by

) is a Vladat, a vampire-like alien from the planet Anur Vladias. He can drain the life force of others and hypnotize others using bat-like parasites called Corrupturas.

Introduced in ''Ben 10'' (2016)

Overflow

Overflow (voiced by

) is a Cascan, a water-based alien from the planet Cascareau. He has a similar appearance and powers to Waterhazard.

Gax

Gax (voiced by

) is a Chimera Sui Generis, a squid-like alien of the same species as Vilgax. Ben loses access to Gax after Vilgax steals his DNA to regain his full strength.

Shock Rock

Shock Rock (voiced by David Kaye) is a Fulmini, an energy-based alien from the destroyed planet Fulmas. He can generate and manipulate electricity. Furthermore, Shock Rock's presence in the Omnitrix influences the other Omnitrix aliens and gives them additional electricity-based abilities similar to his.

Slapback

Slapback (voiced by

) is an Ekoplektoid, a frog-like alien from the planet Ekoplekton. He can duplicate when struck on the back, with clones progressively gaining increases strength and density.

Surge

Surge (voiced by

) is a Xerge, a robotic X-shaped alien from an unidentified planet. He is powerless on his own, but can link with other Xerge to create constructs.

Villains

Vilgax

Vilgax (voiced by

in the original series and ''Omniverse'',

James Remar William James Remar (born December 31, 1953) is an American actor. He has played numerous roles over a 45-year career, most notably Ajax in '' The Warriors'' (1979), Albert Ganz in '' 48 Hrs.'' (1982), Dutch Schultz in '' The Cotton Club'' (198 ...

in ''Alien Force'' and ''Ultimate Alien'',

in the reboot) is a Chimera Sui Generis warlord and Ben's archenemy.

Doctor Animo

Doctor Aloysius James Animo (voiced by

Dwight Schultz William Dwight Schultz (born November 24, 1947) is an American television, film and voice actor. He is known for his roles as List of The A-Team characters#Howling Mad Murdock, Captain "Howling Mad" Murdock on the 1980s action series ''The A-Te ...

) is the first human antagonist Ben faces in the series. Animo was once a promising researcher in veterinary scientist until his career was cut short when he was caught creating twisted genetic experiments. He thought that the experiment would earn him the Verities Award, only to lose it to a scientist named Kelly. This drove him mad, causing him to disappear for five years until he could perfect his research.

SixSix

SixSix (voiced by

in the original series, Josh Keaton in the reboot) is a Sotoraggian bounty hunter and SevenSeven's brother.

Kraab

Kraab (voiced by

Billy West William Richard Werstine (born 1952), known professionally as Billy West, is an American voice actor, comedian, radio personality, impressionist and musician. His voice roles include Bugs Bunny in the 1996 film ''Space Jam'', the title characte ...

in the original series,

in ''Alien Force'',

in ''Omniverse'',

in the reboot) is a Piscciss Premann cyborg and bounty hunter.

Rojo

Rojo (voiced by

Jennifer Hale Jennifer Hale is a Canadian voice actress. She is best known for her work in video game franchises such as ''Baldur's Gate'', ''Mass Effect'', '' Metal Gear Solid'', '' BioShock Infinite'', '' Metroid Prime'', '' Halo'', '' Overwatch'', and '' ...

in the original series and ''Omniverse'',

Kari Wahlgren Kari Wahlgren (born July 13, 1977) is an American voice actress who has provided English-language roles for animated movies, TV series, and video games. She got her start in anime voice-overs as List of FLCL characters#Haruko Haruhara, Haruko H ...

in ''Ultimate Alien'') is a thief and gang leader. In the original series, she temporarily fuses with one of Vilgax's drones, giving her claws and shoulder-mounted lasers.

Zombozo

Herbert J. Zomboni or Zombozo (voiced by

John Kassir John Kassir (born October 24, 1957) is an American actor and comedian. He is known for his work as the voice of the Cryptkeeper in HBO's '' Tales from the Crypt'' franchise. He also appeared in the role of Ralph in the off-Broadway show ''Reefe ...

in the original series,

in subsequent appearances) is a zombie-like clown who feeds on fear.

Circus Freak Trio

The Circus Freak Trio are a trio who worked together under the guise of

freak show A freak show is an exhibition of biological rarities, referred to in popular culture as "Freak, freaks of nature". Typical features would be physically unusual Human#Anatomy and physiology, humans, such as those uncommonly large or small, t ...

performers in Zombozo's circus before his disappearance.

Acid Breath

Acid Breath (voiced by

in the classic continuity, Josh Keaton in the reboot) is a member of the Circus Freaks who can generate acid.

Frightwig

Frightwig (voiced by

Cree Summer Cree Summer Francks (born July 7, 1969) is an American-Canadian actress and singer. She is best known for her extensive work in animation, voicing characters such as Elmyra Duff in ''Tiny Toon Adventures'' and related media, Susie Carmichael ...

in the classic continuity, Jessica DiCicco in the reboot) is a member of the Circus Freaks who has prehensile, tentacle-like hair.

Thumbskull

Thumbskull (voiced by

Jeff Doucette Jeffrey Doucette (born November 25, 1947) is an American actor, comedian, and director. Doucette toured for years with Ernst Emling as the comedy duo Jeff and Ernst. Doucette has appeared in over 90 films and television shows and written two play ...

in the original series, David Kaye in Omniverse,

in the reboot) is a member of the Circus Freaks who has superhuman strength and a nail-like horn.

Hex

Hex (voiced by

in the classic continuity,

Robin Atkin Downes Robin Atkin Downes is an English actor. He is known for his work in animation and video games. Early life Downes was born in London. He earned an MFA from Temple University in Philadelphia. Career Downes has voiced characters in animated f ...

in the reboot) is a sorcerer from Ledgerdomain and Charmcaster's uncle. In ''Omniverse'', he reforms and becomes a professor at Friedkin University.

Phil Billings

Phil Billings (voiced by

Robert Patrick Robert Hammond Patrick (born November 5, 1958) is an American actor. Known for portraying villains and authority figures, Patrick is a Saturn Award winner with four other nominations. Patrick dropped out of college when drama class sparked his ...

in the original series,

in ''Omniverse'',

in the reboot) is a corrupt former Plumber and partner of Max. In between the events of the original series and ''Omniverse'', Khyber and Dr. Psychobos use Phil as a test subject for the Nemetrix, giving him the ability to transform into a Terroranchula hybrid. In the reboot, Phil is a benevolent inventor who remains a member of the Plumbers.

Forever Knights

The Forever Knights are a secret paramilitary organization dealing with alien encounters and other varying activities. They were founded by Sir George to fight Dagon, but his departure resulted in them splintering into factions, each led by a Forever King. During the events of ''Ultimate Alien'', George reunites the Forever Knights to combat Dagon, during which most of them are killed. The Forever Knights consist of Enoch (voiced by Richard Doyle), Driscoll (voiced by Richard Doyle), the Red Knight, Connor (voiced by

Hakeem Kae-Kazim Hakeem Kae-Kazim (born 1 October 1962) is a British actor and producer. He portrayed Georges Rutaganda in the film ''Hotel Rwanda'' (2004) and won a SAFTA for his performance in the film '' Riding with Sugar'' (2020). He produced and starred ...

), Joseph Chadwick (voiced primarily by

Tim Curry Timothy James Curry (born 19 April 1946) is an English actor and singer. He rose to prominence as Dr. Frank-N-Furter in the musical film '' The Rocky Horror Picture Show'' (1975), reprising the role he had originated in the 1973 London, 1974 L ...

and by David Kaye in the ''Omniverse'' episode "Return to Forever"), Morton (voiced by

), Winston (voiced by

Patrick Cavanaugh Patrick Cavanaugh is an American actor. Early life and education Cavanaugh was raised in Vallejo, California; his parents divorced when he was young. Cavanaugh started performing as a child and did a Young Actor's Workshop at a local community ...

), Urian (voiced by Jim Piddock), and Cyrus (voiced by

). In the reboot, a lone Forever Knight (voiced by

) is featured as a major antagonist.

Clancy

Clancy (voiced by Nicholas Guest) is a mutant human who can control insects. He later mutates further and becomes an insect-like monster.

Vulkanus

Vulkanus (voiced by

) is a Detrovite criminal. His body was previously destroyed in an explosion, leaving only his head intact and forcing him to wear powered armor until his body regenerated.

Charmcaster

Charmcaster (voiced by

in the classic continuity,

in the reboot) is a sorceress from Ledgerdomain and Hex's niece. Her father Spellbinder was previously killed by Addwaitya, forcing her and Hex to flee to Earth.

Zs'Skayr

Zs'Skayr (voiced by

in the original series and ''Omniverse'',

in ''Alien Force'') is the leader of Anur Phaetos and Ghostfreak's genetic donor. His consciousness is initially trapped in the Omnitrix before escaping in the original series episode "Ghostfreaked Out".

Werewolf

The Werewolf is an unnamed Loboan and a servant of Zs'Skayr.

The Mummy

The Mummy is an unnamed Thep Khufan and a servant of Zs'Skayr.

Viktor

Dr. Viktor (voiced by

) is a Transylian scientist and Zs'Skayr's assistant.

Exo-Skull

Exo-Skull (voiced by Richard McGonagle in the original series, David Kaye in ''Omniverse'') is a rhinoceros-like mutant created by Dr. Animo. Originally encountered in Ben 10,000's future in the original series, a present-day version of Exo-Skull is later seen in ''Omniverse'' as one of Maltruant's minions and the partner of Subdora.

Kane North

Kane North (voiced by

John Cygan John Cygan (April 27, 1954 – May 13, 2017) was an American actor and comedian. Early life Cygan was born in New York City to a large family of thirteen children, six of whom were his half-siblings. His parents never married. He attended Wes ...

in the original series,

in ''Omniverse'') is the creator of the television series ''Kangaroo Kommando'' and a criminal who wields a suit based on the series' eponymous character.

Eon

Eon (portrayed by

in ''Race Against Time'', voiced by Yuri Lowenthal and Sean Donnellan in ''Ultimate Alien'', Judd Nelson in ''Omniverse'') is a time-travelling villain and rival of Professor Paradox. He is initially depicted as a Chronian before being

retconned Retroactive continuity, or retcon for short, is a literary device in fictional story telling whereby facts and events established through the narrative itself are adjusted, ignored, supplemented, or contradicted by a subsequently published work ...

as an alternate universe variant of Ben.

Eon's Servants

Eon's Servants are the servants of Eon. They are depicted as corrupted humans in the original series and ''Ultimate Alien'' and as robots in ''Omniverse''.

Highbreed

Atasians, commonly known as the Highbreed, are a xenophobic species from the planet Augstaka who serve as the initial primary antagonists of ''Alien Force''. They are voiced by various actors, including

, Robert David Hall, Richard McGonagle, and

DNAliens

The DNAliens are lifeforms infected by Xenocites, alien

leeches Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular segmented bod ...

created by the Highbreed. They are voiced by various actors, including

Diane Delano Diane Delano (January 29, 1957 – December 13, 2024) was an American character actress. She was known for her numerous roles in films and television, such as Sergeant Barbara Semanski on the CBS television series ''Northern Exposure'' and Rober ...

Will Friedle Will Friedle (; born August 11, 1976) is an American actor and screenwriter. He is best known for his role as List of Boy Meets World characters#Eric Matthews, Eric Matthews in the American Broadcasting Company, ABC sitcom ''Boy Meets World'' (19 ...

Wallace Langham James Wallace Langham II (born March 11, 1965) is an American actor. He is known for playing the role of Phil the Head Writer on ''The Larry Sanders Show''. He has also played the roles of David Hodges on the crime drama television series '' CSI: ...

, and Richard McGonagle.

Gorvan

Gorvan (voiced by

in ''Alien Force'', Rob Paulsen in ''Omniverse'') is a Tetramand criminal. Gorvan is initially a traitorous Plumber who debuts in a tie-in video game to ''Alien Force'', before reappearing as an ally of Psyphon in ''Omniverse''.

Argit

Argit (voiced by

Alexander Polinsky Alexander Polinsky (born October 7, 1974) is an American actor. He is known for his role as Adam Powell on '' Charles in Charge''. In animation, he has voiced Control Freak on ''Teen Titans'' (2003) and ''Teen Titans Go!'' (2013), Argit in the ' ...

) is a rat-like alien con man and friend of Kevin. He possesses venomous quills that can paralyze anyone exposed to them.

Darkstar

Michael Morningstar (voiced by

Wil Wheaton Richard William "Wil" Wheaton III (born July 29, 1972) is an American actor and writer. He portrayed Wesley Crusher on the television series ''Star Trek: The Next Generation'', Gordie Lachance in the film ''Stand by Me (film), Stand by Me'', ...

in the classic continuity,

Drake Bell Jared Drake Bell (born June 27, 1986) is an American actor and musician. Born in Newport Beach, California, he began his career as a child actor in the 1990s, appearing on ''Home Improvement (TV series), Home Improvement'' (1994) and in severa ...

in the reboot episode "Bright Lights, Black Hearts",

in the reboot episode "The Charm Offensive"), also known as Darkstar, is a mutant who can absorb life energy from others. He initially masquerades as benevolent before Ben exposes and defeats him, temporarily rendering him drained and zombie-like.

The Incurseans

The Incurseans are

toad Toad (also known as a hoptoad) is a common name for certain frogs, especially of the family Bufonidae, that are characterized by dry, leathery skin, short legs, and large bumps covering the parotoid glands. In popular culture (folk taxonomy ...

-like aliens who were forced to become spacefarers after their planet was destroyed during a civil war.

Emperor Milleous

Milleous (voiced by

in the classic continuity,

in the reboot) is Attea's father and the former leader of the Incurseans.

Princess Attea

Attea (voiced by

) is an Incursean princess and the daughter of Emperor Milleous, who she later seizes power from.

Raff

Raff (voiced by

James Arnold Taylor James Arnold Taylor (born July 22, 1969), also known by his initials JAT, is an American voice and television actor. He is known for voicing Ratchet in the ''Ratchet & Clank'' franchise, the main character Tidus in '' Final Fantasy X'', Shuyin ...

in ''Alien Force'',

in ''Omniverse'') is a Sylonnoid commander who serves the Incurseans.

SevenSeven

SevenSeven (voiced by

) is a Sotoraggian bounty hunter and SixSix's brother.

Albedo

Albedo (voiced by

in Galvan form,

in human form) is a Galvan and Azmuth's former assistant. He wields a copy of the Omnitrix that made his default form an albino clone of Ben.

The Queen

The Queen (voiced by Wendy Cutler) is the queen of the Nanochips.

Psyphon

Psyphon (voiced by

) is an alien and former servant of Vilgax who later becomes an independent criminal.

R.E.D.

The R.E.D.s (Robotic Extermination Devices) are red robots who work for Psyphon.

Ssserpent

Ssserpent (voiced by

) is a snake-like alien criminal.

Vreedle Brothers

The Vreedle Brothers are Vreedle bounty hunters and the sons of Ma and Pa Vreedle. They consist of Octagon Vreedle (voiced by

) and Rhomboid Vreedle (voiced by

Sunder

Sunder (voiced by

Powers Boothe Powers Allen Boothe (June 1, 1948 – May 14, 2017) was an American actor known for his commanding character actor roles on film and television. He received a Primetime Emmy Award and nominations for two Screen Actors Guild Awards. He won ...

in ''Alien Force'' and ''Ultimate Alien'', David Kaye in ''Omniverse'') is an alien bounty hunter who wields an axe.

Jarret

Jarret (voiced by

) is the leader of the Pantophage.

Will Harangue

Will Harangue (voiced by

) is a news anchor (a parody of J. K. Simmons' portrayal of J. Jonah Jameson) who believes Ben to be a menace. In ''Omniverse'', he allies with the Incurseans before Ben transforms him into an alien using the Forever Knights' machine.

Aggregor

Aggregor (voiced by

) is an Osmosian who sought to obtain godhood by absorbing a baby Celestialsapien. He nearly succeeds, but is defeated by Kevin and imprisoned in the Null Void.

Carl Nesmith

Carl Nesmith (voiced by

Christopher McDonald Christopher McDonald (born February 15, 1955) is an American actor. McDonald is best known for playing the villainous professional golfer Shooter McGavin in the 1996 comedy '' Happy Gilmore'', a role he’d later reprise in 2025’s sequel '' H ...

) is a fraud and glory-hound who poses as the superhero Captain Nemesis and stages crimes to make himself look heroic.

Computron

Computron (voiced by

) is a robotic villain who was imprisoned in Dimension 12.

King Xarion

Xarion (voiced by

Peter Stormare Rolf Peter Ingvar Stormare (; Birth name, né Storm, 27 August 1953) is a Swedish actor. He played Prince Hamlet, Hamlet for Ingmar Bergman, Gaear Grimsrud in the film ''Fargo (1996 film), Fargo'' (1996) and List of Prison Break characters#John ...

) is the king of Zarkovia. He transfers his mind into Dr. Viktor's body in ''Ultimate Alien'' and is killed in ''Omniverse'' when Zs'Skayr destroys his soul.

Addwaitya

Addwaitya (voiced by

in ''Ultimate Alien'',

in ''Omniverse'') is a mutant Geochelone Aerios and sorcerer.

Pa Vreedle

Pa Vreedle (voiced by

in ''Ultimate Alien'',

in ''Omniverse'') is Ma Vreedle's ex-wife and the father of the Vreedle Brothers.

Trumbipulor

Trumbipulor (voiced by

in ''Ultimate Alien'',

in ''Omniverse'') is an elephant-like alien criminal.

Dagon

Dagon (voiced by

) is an interdimensional squid-like entity who the Forever Knights were originally created to fight. At the end of ''Ultimate Alien'', Dagon is imprisoned in the Sword of Ascalon and sent into space.

Lucubras

The Lucubra (voiced by

) are animalistic servants of Dagon who feed on the thoughts of others.

Flame Keepers' Circle

The Flame Keeper's Circle is a cult that worships Dagon. They consist of Conduit Edwards (voiced by

) and the Esoterica, foot soldiers who can teleport between dimensions.

Ma Vreedle

Ma Vreedle (voiced by

) is a notorious criminal and the leader of the Vreedles. She is assisted by the Pretty Boy Vreedles, an army of mass-produced children (also voiced by Delano).

Inspector 13

Inspector 13 (voiced by

) is an illegal weapons dealer and a former Techadon Weaponmaster.

Malware

Malware (voiced by

) is a mutant Galvanic Mechamorph who was born with an emaciated, yellow appearance and can absorb technology rather than enhance it. Frustrated by Azmuth's refusal to heal him, Malware steals the cure he created and assumes a monstrous red form.

Khyber

Khyber (voiced by David Kaye) is a Zaroffian hunter who battles Ben out of a desire to find worthy prey.

Dr. Psychobos

Dr. Psychobos (voiced by

) is a cybernetically enhanced Cerebocrustacean who helped Khyber create the Nemetrix.

Undertown Thugs

A group of criminal aliens that reside in Undertown. They are mainly hired by Psyphon for different plans, but also act independently to commit other criminal acts.

Bubble Helmet

Bubble Helmet (voiced by

) is a caterpillar-like alien who wields powered armor that enables him to breathe.

Fistina

Fistina (voiced by Morgan Lofting) is a cybernetically enhanced Acrosian who uses a containment suit as battle armor and can shoot her fists like rockets. Later in the series, she reforms and considers joining the Plumbers.

Liam

Liam (voiced by

) is a chicken-like alien of the same species as Kickin' Hawk.

Thunderpig

Thunderpig (voiced by

) is a pig-like alien who wields an electrified flail. His design and name are a parody of ''

ThunderCats ''ThunderCats'' is a media franchise, featuring a fictional group of cat-like humanoid aliens. The characters were created by Tobin Wolf and featured in an animated television series named ''ThunderCats'', running from 1985 to 1989, whic ...

''.

Tummyhead

Tummyhead (voiced by

) is a two-headed alien who works for Psyphon.

Sweet-Eels Sparklefunk

Sweet-Eels Sparklefunk (voiced by

) is a tentacled alien who works for Psyphon.

Bouncer

Bouncer (voiced by

) is an unnamed alien who works for Psyphon.

Bug-Lite

Bug-Lite (voiced by Bumper Robinson) is an insect-like alien who works for Psyphon.

Fistrick

Fistrick (voiced by

) is a crime lord and arms dealer. He is served by Corvo (voiced by

), an unnamed Thug (voiced by

in "A Jolt from the Past", Eric Bauza in "No Honor Among Bros"), and an unnamed Hoodlum (voiced by

in "A Jolt from the Past",

in "No Honor Among Bros").

Solid Plugg

Solid Plugg (voiced by

) is a freelance criminal and resident of Undertown.

Princess Looma Red Wind

Looma Red Wind (voiced by

) is a Tetramand princess who Ben becomes betrothed to after defeating her in solo combat.

Billy Billions

Billy Billions (voiced by

Aziz Ansari Aziz Ismail Ansari ( ; born February 23, 1983) is an American actor, comedian, and filmmaker. He played Tom Haverford on the NBC series '' Parks and Recreation'' (2009–2015) and created and starred in the Netflix series ''Master of None'' (2 ...

in ''Omniverse'', Gunnar Sizemore in the reboot) is a billionaire and childhood rival of Ben. He was previously trapped in Dimension 12 during a battle with Ben and rendered incapable of aging.

Mazuma

Mazuma (voiced by

) is an android and Billy Billions' servant.

Nyancy Chan

Nyancy Chan (voiced by Gwendoline Yeo) is a mutant criminal who can control felines.

EightEight

EightEight (voiced by

) is a Sotoraggian bounty hunter and the older sister of SevenSeven and SixSix.

Way Bads

The Way Bads (voiced by

) are mutant To'kustars created by Dr. Psychobos.

Crujo

Crüjo (voiced by

) is a bear-like Loboan who works for Zs'Skayr.

Kuphulu

Kuphulu (voiced by

Jeffrey Combs Jeffrey Alan Combs (born September 9, 1954) is an American actor. He is best known for starring as Herbert West in the ''Re-Animator'' film series (1985–2003) and portraying multiple characters in the ''Star Trek'' universe, most notably the ...

) is a Thep Khufan who works for Zs'Skayr.

Lord Transyl

Lord Transyl (voiced by David Kaye) is the former leader of the Vladats, who were killed in a war with the Transylians. In the present day, Zs'Skayr resurrects Transyl using the Alpha Rune.

Rooters

The Rooters are a

black ops A covert operation or undercover operation is a military or police operation involving a covert agent or troops acting under an assumed cover to conceal the identity of the party responsible. US law Under US law, the Central Intelligence Ag ...

unit of the Plumbers who transformed themselves into alien hybrids using Kevin's abilities. They consist of the Cerebrocrustacean hybrid Servantis (voiced by

), the Aerophibian hybrid Swift (voiced by

), the silent Prypiatosian-B hybrid Leander, and Max’s former partner Phil.

Kundo

Kundo (voiced by

) is a Revonnahgander traditionalist and Rook Blonko's former teacher who despises technology. He is later transformed into a cyborg after being mortally wounded in battle with Ben.

Maltruant

Maltruant (voiced by

Mark Hamill Mark Richard Hamill (; born September 25, 1951) is an American actor. He is best known for starring as Luke Skywalker in the ''Star Wars'' franchise, and the Joker (character), Joker in various animated DC Comics projects, starting with ''Batm ...

) is an evil Chronosapien who seeks to remake the universe in his image. In the ''Omniverse'' series finale, "A New Dawn", he is defeated and trapped in a time loop that has him continually rebuilt and destroyed.

Subdora

Subdora (voiced by

) is a Merlinisapien thief who works for Maltruant and is partnered with Exo-Skull.

Notes

References

External links

Ben 10 Characters official US site
{{DEFAULTSORT:List of Ben 10 characters 2000s television-related lists 2010s television-related lists 2020s television-related lists Ben 10 Cartoon Network Studios characters Cartoon Network Studios superheroes Lists of characters in American television animation