Shredder Clones

The following is a list of characters in the ''Teenage Mutant Ninja Turtles'' franchise.

Overview

This table shows the recurring characters and the actors who have appeared in Teenage Mutant Ninja Turtles 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 performance in costume.
* A indicates a singing role.
* A indicates an appearance in deleted scenes only.
* A indicates a motion-capture role.
* A indicates a character is mute.
* A indicates an uncredited role.

Main characters

In most versions, the Teenage Mutant Ninja Turtles are created when four baby turtles are exposed to radioactive ooze, transforming them into humanoids.

Leonardo

Leonardo, nicknamed Leo, is the leader of the ninja turtles, as well as the most disciplined and skilled. Naturally stoic and mature beyond his years, his main priority is to help his brothers to be the best ninjas they can. Because of his leadership, he's often challenged with the constant rebelliousness of Raphael. An expert swordsman, he wields two katanas and wears an ocean blue mask.

Donatello

Donatello, nicknamed Donnie, is the smartest and gentlest of the Turtles. An intellectual, he often attempts to reach his goals through science and technology rather than through violence and so frequently invents gadgets and vehicles. He is typically the passive turtle and Leonardo's second-in-command, always one step ahead of his brothers and coming up with solutions to complex problems when they cannot. Studying the art of Bojutsu, he wears a purple mask and wields an oak bō.

Raphael

Raphael, nicknamed Raph, is the most aggressive and temperamental of the turtles. Rebellious, cynical, and quick witted, he is often driven by his strong emotions and is more prone to temper loss than his brothers. He possesses a strong desire for independence, often going rogue whenever opportunity calls for it and displaying disapproval of authority. His quick temper tends to get the better of him, but he openly loves his family, and is fiercely loyal to his allies. He wears a red mask and wields a pair of sai.

Michelangelo

Michelangelo, nicknamed Mikey, is the least disciplined and most fun-loving turtle. He is usually portrayed as the most agile and naturally gifted, contrasting his free spirit and inability to take training seriously. The most stereotypical teenager of the team, he is an avid fan of pop-culture and often speaks with a surfer dialect. He yearns to live life to the fullest, resulting in a tendency to fool around whenever possible. He wears an orange mask and fights using nunchucks.

Splinter

Splinter is the mutant rat sensei and adoptive father of the Ninja Turtles. Generally depicted as wise and powerful, he raised the four turtles and trained them in the art of Ninjutsu. He is very cautious and protective of them, constantly warning them of the dangers on the surface. In stark contrast to his coarse gnarly appearance, Splinter always speaks in a quiet gentle dignified voice.

April O'Neil

April O'Neil is a confident, courageous, benevolent, intelligent, and outgoing human companion of the Ninja Turtles. She met the Turtles when they saved her from a squadron of MOUSERS chasing her down the sewers. She embarked on many of the Turtles' adventures and aids them by doing the work in public while the Turtles cannot.

Casey Jones

Casey Jones is a hockey-masked vigilante, armed with an assortment of sporting goods that he carries in a golf bag. He is a close ally of the Ninja Turtles, whom he met after having a martial-arts skirmish with the temperish Raphael regarding Casey's own inflamed behavior when battling the bad guys.

Recurring characters

Hamato Yoshi

Hamato Yoshi is a ninjutsu master whose history is always intertwined with Splinter's. In most versions, Splinter is either his pet rat or a mutated form of Yoshi himself.

Mighty Mutanimals

Dreadmon

Jagwar

Leatherhead

Leatherhead is a mutant American alligator and hot-headed ally of the Ninja Turtles.

Mondo Gecko

Ray Fillet

Wingnut and Screwloose

Slash

Slash is a humanoid turtle who is either an enemy or ally of the Ninja Turtles depending on the version.

In the Archie comics continuity, he is a turtle-like alien from a tropical planet in Dimension X. Slash's home world was eventually destroyed by alien invaders, leaving him the only homeless survivor of his kind. He was later found by Krang, who made a deal with him to find his way back to Earth, and in return, Slash came under the former's leadership and kept the Ninja Turtles busy while Krang sought to possess Shredder's body, but to no avail. Slash's rampage caught the attention of the Mighty Mutanimals, who captured him and brought him to their island. With Leatherhead's help, Slash was able to control his violent spree and informed that he would be allowed to stay in a grove of lush palm trees he so loved. Grateful, he went on to become a member of the Mutanimals, ultimately sacrificing himself later to save the Turtles.

In the 1987 animated series, Slash (voiced by Pat Fraley) was Bebop's pet turtle, mutated by Rocksteady to carry out an assignment that Shredder wanted them to do. However, when the plastic palm tree he loved in his tank was accidentally dropped down an air duct by Bebop, Slash went berserk and stole Shredder's shaolin, chasing them around the Technodrome before going to Earth on Bebop's part. There, he ran into a corrupt businessman building condos in the sewers until the Ninja Turtles foiled it. As payback, the businessman sent Slash to smash the Freedom Bell, which would tarnish the Turtle's reputation and give them a bad name. The Turtles eventually stopped them and sent Slash into space aboard a trash rocket, which unknowingly contained a plastic palm tree that he was so content with. After having a run-in with a race of super-intelligent aliens who hooked him up to a machine to grant him their intelligence, Slash returned to Earth with fancy weaponry and equipment of his design and planned to turn everyone into turtles to become the number 1 supreme turtle. This was foiled when Donatello tricked him into thinking that he turned the Turtles into humans to lure Slash into a rooftop fight. Thus, Slash was reverted to his low-level intelligence and launched into space once again.

In the IDW comics, Slash was introduced as Specimen 6, a snapping turtle experiment at StockGen mutated with Old Hob's DNA assigned to hunt down the Ninja Turtles and Splinter. However, his mind became unstable and gave him a savage nature, so Specimen 6 was contained in a special tank guarded by the Rock Soldiers. He was later freed due to April O'Neil's diversion to retrieve the Turtle Tracker for the Ninja Turtles. After punching one of the Rock Soldiers, he escaped from the lab into the night. From then, Slash began lurking around the city as a mindless monster injuring people and damaging their property, such as attacking Michelangelo's pizza-delivering friend Woody and leaving scratch marks on April's van. After ripping off the shirt of a thug the Turtles just apprehended, he followed them to an abandoned church and attacked them in the church basement. Though proven more powerful than the Turtles, Slash was accidentally impaled by Leonardo and left to fall into the sewers. He eventually survived the wound and was washed ashore to be woken up by Old Hob, who told him that they should work together to hunt down anyone with a connection to StockGen. Slash was shown the error of his ways when Michelangelo gave him a candy bar that he instantly fell in love with. He agreed to help the Turtles escape from one of Shredder's traps. He was an integral part of a mission to reclaim Leonardo from the Foot Clan, and developed a strong antipathy towards Hun, whom he knew as the "Dragon Man". At the mission's conclusion, he was given a new black mask by Leonardo, as well as a bladed gauntlet. Slash's life changed forever when Hob began producing new mutants, but discovered that Lindsey Baker's psychotropic compound was crucial to the process. He took a syringe of Splinter's compound-infused blood, declaring that he wanted to be a "hero" like Michelangelo. Mikey tried to reassure Slash that he himself was not even a hero and that the two of them were both still just children, but Slash injected himself anyway. After a few minutes of agonizing pain, he suddenly began to think more clearly and speak more eloquently than before. With his new intelligence, he became the co-founder of Hob's new mutant army, the Mutanimals, and was involved in Hob and Splinter's attack on the Foot Clan.

In the 2012 animated series, Slash (voiced by Corey Feldman) was introduced as Spike, a young box turtle who was flushed into the sewers from his original owner's home and saved from drowning by Raphael, who took him in as his pet. He used to listen to his owner's angry ranting about his troubles with his family and learned ninjutsu by watching Raphael practice it in his room. Although no one knew at the time, Spike even developed a hatred for the Ninja Turtles, thanks to hearing Raphael's angry chants all his life. One night, he drank from a canister of mutagen that spilled in Raphael's room, mutating himself into a mutant box turtle with a spiked shell, long fingernails for makeshift weapons, heightened smell and superhuman agility. Obtaining a mace, Slash joined the other Turtles on patrol but revealed his true intentions by beating Donatello and Michelangelo, to Raphael's horror. The following murderous spree nearly took Leonardo's life. After engaging his former owner, he survived the fall off the roof top and fled into the night. However, the incident left Raphael with a lasting regret. Slash was captured a few times by the Krang during several run-ins with them. In the last of these run-ins, he was freed by Newtralizer and allied with him to start a violent but effective crusade against the krang. Despite having a dislike for the Turtles, he still shares the same beliefs they were taught regarding protection of the innocent. So, when the amoral Newtralizer to destroy all humans and krang, Slash realized the position he put Raphael in and sided with the Turtles and Casey Jones to stop him. He then made amends with them and declines the offer to rejoin their team before departing, saying that he was better operating solo. As soon as the Krang's invasion started, Raphael began hoping that Slash survived. He eventually did, however, and was later recruited as leader of the Mighty Mutanimals as they worked with the Turtles to take back the city from the Krang.

Slash appears as a boss in the video games '' Teenage Mutant Ninja Turtles III: The Manhattan Project'', the Super NES version of '' Teenage Mutant Ninja Turtles: Turtles in Time'' and '' Teenage Mutant Ninja Turtles: Shredder's Revenge''.

Mutagen Man

Mutagen Man is a character in the "Teenage Mutant Ninja Turtles" franchise that suffers a bizarre encounter with mutagen that exposes his internal organs and resides in a special robotic suit.

In the 1987 animated series, Mutagen Man (voiced by Rob Paulsen) was introduced as Seymour Gutz, a nerdy mailman who became dismembered after falling into a special vat of mutagen.

In the IDW comics, Mutagen Man is a failed attempt at combining several different animal breeds into one mutant. When The Mutanimals found him strapped to a bed, they tried to free him. Although he is told that he's being saved, Mutagen Man has a different idea of the term by forcing Old Hob's gun to his dome and urging him to fire. Hob refuses and they all escape the facility together. Later, Mutagen Man was given the name "Seymour Guts" by Mondo Gecko.

In the 2012 animated series, Mutagen Man (voiced by Roger Craig Smith) was introduced as Timothy, a young ineffective ice cream vendor who, after witnessing the Turtles' first battle with Baxter Stockman from his apartment window, dedicated himself into fighting crime as a wannabe superhero in a turtle costume called The Pulverizer. When he was exposed to mutagen, he dissolved into a . mutant blob of mutagen with floating organs and a disintegrating touch. He kept in a special mutagen container by Donatello, who keeps him in his room in the lair and promises to help him find a way to turn back to normal.

Ninjara

Ninjara's real name is Umeko, but for reasons that were never fully revealed she goes by the name "Ninjara". While Splinter first thought she was an " atomic child", she was actually once part of an ancient race of humanoid foxes living on a hidden island off the coast of Japan. She ended up becoming a thief and assassin for the villainous dog-man Chien Kahn, but then had a change of heart when she met the Turtles, and fell in love with Raphael. She helped out on many missions, from the Far and the Middle East to Dimension X. Her family life was explored more in detail when her younger brother managed to track her down and convince her to come back home. The Turtles discovered the island was hidden by fog banks, but despite this, it had been discovered by an opportunistic, greedy hunter. She was a powerful member of the team from issue #29 until issue #70 from the TMNT Adventures from Archie comics.

Fugitoid

Professor Zayton Honeycutt, also known as Dr. Zayton Honeycut, is a semi-retired scientist from the planet D'Hoonib whose mind was transferred into his working robot as both were struck by lightning. As he refused to build a transmat device (a means of teleportation) for General Blanque of the Federation military in their war against the Triceraton Republic, he was categorized as a "Fugitoid" (short for "fugitive android"). The character was introduced in a series of strips in the ''Gobbledygook'' comics that was later finished in a one-off self-titled comic book and then guest starred in the original TMNT issues 5 to 7, later became a recurring character in the main TMNT comic.

In the IDW comics, Professor Honeycutt was a Neutrino scientist who used to work for Krang. Honeycutt's wife Marra worried about the influence of evil that was oppressing the Neutrino people, including their family. She convinced him that they should join the Neutrino resistance, and so they did. Three months later, Krang's armies had found where the resistance compound was and targeted it for attack. A fire broke out, and the living quarters were locked down due to safety protocols. Rather than let Marra, their son Ely, and the rest of the families burn to death, Honeycutt used SAL to breach the flames and override the safety protocols. By doing so, he sacrificed his own body where he became trapped within SAL in the process. Honeycutt saved the families, but his victory was short-lived. Sergeant Granitor ordered an attack on the fleeing families killing them all. Honeycutt could do nothing but watch them die on the security monitor. Not long after, Honeycutt had made it back to the lab, and Granitor and some Rock Soldiers found him. Honeycutt restrained himself from tearing apart the man who gave orders to kill his family and instead escaped through the portal he had been working on. Now in New York City on Earth, Honeycutt masqueraded as a blonde male to hide from the Rock Soldiers. Honeycutt took a job with Baxter Stockman at StockGen calling himself Chet Allen. Stockman worked with Krang, so Honeycutt was hidden within plain sight. Krang referred to the professor's new form as a "fugitive android". Rather than involve more innocents in the fight, Honeycutt allied himself with the Foot Clan. Although Honeycutt knew the Foot Clan were evil, they were enemies of Krang and his forces as well.

The Fugitoid appeared in the 2003 ''Teenage Mutant Ninja Turtles'' animated series voiced by Oliver Wyman. Here his mind was transferred into the robotic body of his helper robot SAL after the pair were struck by lightning while Honeycutt was wearing a psychic amplifier device. Both the Triceratons and the Federation pursued him seeking to obtain his Teleportal device to gain the upper hand in their ongoing conflict, but Honeycutt found surprising allies in the Turtles. They wound up back on Earth courtesy of the Utroms' transmat, which later transported Honeycutt and the Utroms to their homeworld. However, upon learning that the Triceratons had pursued him to Earth, Honeycutt returned there after erasing the Teleportal blueprints from his mind. He was eventually captured by the Federation, but managed to infect their fleet with a computer virus that shut them down, with his body being fried in the process. Honeycutt's sacrifice touched both sides, and a peace soon resulted between the two. Honeycutt later returned, having uploaded a copy of his mind into Earth's satellite network prior to his demise. Leatherhead later built him a new body using Earth technology, and he would continue to provide aid to the Turtles, eventually officiating at April and Casey's wedding.

The Fugitoid appears in the 2012 animated series, voiced by David Tennant. He first appears at the conclusion of season 3 aboard his vessel, the ''Ulixes'', just in time to save the Turtles, April O'Neil, and Casey Jones from a black hole created by the Triceratons. After they escape, he introduces himself and promises them that they are about to embark upon a great adventure. He revealed that he was a normal scientist until his body was destroyed by the Triceratons for turning down their offer to make weapons for them. His brain survived and was placed in the body of his robotic assistant, and he set out to stop the Triceratons from causing any more harm. He also formed an alliance with the Utrom some time prior to becoming a cyborg, and later approached them with the Turtles in an effort to learn the whereabouts of the black hole generator fragments. The reason for Fugitoid's involvement was later revealed in "Earth's Last Stand": he had created the black hole generator and then sold it to the krang, only learning later the ghastly use to which it would be put. Despite the distrust this prompts in the Turtles, April, and Casey, Fugitoid manages to recover the generator and execute his plan: combining his power source and that of his ship to destroy the generator while wiping out the Triceraton fleet in the process. A past version of the Fugitoid then arrives and takes the now duplicate versions of April, Casey, and the Turtles on an adventure; meanwhile, in the wreckage of the Triceraton fleet, present-day Honeycutt's head is shown to be intact and apparently partially functional.

Fugitoid appears as a playable character in the Wii version of the 2009 fighting game '' Teenage Mutant Ninja Turtles: Smash-Up'', voiced by Oliver Wyman''.'' He also appears as an NPC in the videogames '' Teenage Mutant Ninja Turtles 2: Battle Nexus'' (2004) and '' Teenage Mutant Ninja Turtles 3: Mutant Nightmare'' (2005), as well as a cameo in the Dimension Shellshock DLC of the 2022 game '' Teenage Mutant Ninja Turtles: Shredder's Revenge''.

Supporting characters and allies

Tang Shen

Tang Shen appears in the Mirage comics as the lover of Splinter's owner Hamato Yoshi.

Then Shen appears in the IDW comics as Hamato Yoshi's wife.

In the 2003 animated series, Tang Shen debuted in flashbacks in the Season 4 episode "Tale of Master Yoshi", which was told by Leonardo to Splinter and the other Turtles. In this version, Tang Shen had been an orphan raised by the Ancient One, in Tokyo, Japan, who eventually took in the orphaned Hamato Yoshi and his friend Yukio Mashimi as his own sons. As the years passed, she fell in love with Hamato Yoshi, and took in a hungry, innocent rat as a pet. As her bond with Yoshi strengthened, an even greater rift occurred in Yoshi's longtime friendship with Mashimi. Blinded by jealously and hatred, Yukio had ruthlessly murdered Tang Shen in cold blood. Her premature demise is what prompted Hamato Yoshi to challenge his former best friend and adopted brother to a duel. It was Tang Shen's everlasting kindness, beauty and love that made him name the pet rat "Splinter". Her grave is located on a hill of flowers, where Hamato Yoshi was eventually laid to rest as well.

In the 2012 animated series, Tang Shen had been the loving wife of Hamato Yoshi (who eventually mutated into the mutant-rat Splinter), and had borne a daughter whom they named Miwa. Her decision in choosing Hamato Yoshi over his adopted brother, Oroku Saki, had caused intense hatred to fester between them. Further taken over by vengeance, jealously and rage, Oroku Saki had staged an attack on Yoshi, attempting to finish him once and for all. However, Tang Shen intervened to defend her husband; a fatal decision, as the final blow meant for Yoshi had struck her instead. Fifteen years after her tragic demise, Hamato Yoshi had moved to New York City (which had been her own desire), where he had purchased four baby turtles, encountered a krangdroid, and mutated into the rat-mutant Splinter via their mutagen. To keep her memory alive, several photographs of her remain with her husband in the Dojo, and a torn color picture (with her shoulder held by her husband Hamato Yoshi, who the Shredder had torn off to further make his fabrications more real) kept by her teenage daughter Miwa, who had been abducted by Oroku Saki as an infant and renamed Karai. She is even seen in memories of Splinter's. She makes her first and only live appearance in "Tale of the Yokai" when the Turtles travel back sixteen years previously via Renet's time specter. She had expressed her dislike at her husband wanting to save the last of the Hamato clan, as she believed ninjas had no place in the modern world, not wanting her only child to follow in the path of her father. She was later approached by Oroku Saki, now clad in Foot Clan attire, and said that she had made her choice. She was asked to take little Miwa and leave as the two adopted brothers faced off in a death-duel. In the prequel episode ''"Lone Rat and Cub"'' Tang Shen was seen in the black-and-white picture of her next to her husband, holding their baby daughter between them. She was last seen in a vision of Splinter's when he debated whether he had the discipline to be a proper father, for either Miwa (were she alive) or the baby mutant Turtles.

Mr. O'Neil

There have been different versions of April's father in the TMNT franchise.

In the Mirage Comics, he is named Robert O'Neil. Not much is known of O'Neil, only that he is an antique dealer who owned his own shop, "Second Time Around", and a proficient businessman. One day his daughter Robyn was born, but his wife could no longer bear any children. In his examination of a few things that he purchased, but had not yet sorted, he had found a strange crystal, O'Neil attached the crystal to a pencil and was miraculously able to bring his drawings to life. O'Neil decided to satisfy his wife's desire to have children, but all of his attempts to create babies broke into nothing, as he had drawn them with a pencil. Sometime later O'Neil tried again with an ink pen, the result did not disappear this time and grew into a young woman: April.

Nearly thirty years later O'Neil died of a serious illness (probably cancer) and bequeathed his entire estate to his daughters, he gave April his old antique shop (but by then it was already destroyed by the Shredder and the Foot Clan when they had sought vengeance on April's new friends, the Turtles). All his life he had the secret of her origin concealed from April, until she had to learn through a chain of dramatic circumstances that she was not a naturally-born creature, and only some time later with Renet's Help was she finally able to discover the truth. This realization gave April a severe emotional crisis, and she left her old life behind for a while to find a new meaning to her existence.

In the 2012 animated series, he is named Kirby O'Neil, voiced by Keith Silverstein. In this show, Dr. Kirby is a psychologist, but was mutated into a mutant bat in the season 2 premiere "The Mutation Situation" and coined "Kirby Bat" until he was cured in season 3's "Battle for New York".

In the IDW Comics, April's father is named John O'Neil. John experienced a stroke that left him wheelchair-bound and reliant on his wife Elizabeth. Their daughter April considered abandoning her studies to help look after him, but her parents argued against it. Up until his stroke, John was employed as chief assistant at StockGen, the genetics laboratory of Baxter Stockman, which is responsible for the transformation of Splinter and the Turtles into mutants. He also knew of the Ooze, the base material for Stockman's experiments. It was through his initiative that April was able to secure her internship, through which she later became acquainted with the Turtles, but he and his wife already had a hunch that something in this laboratory was not right.

Some time later, the Turtles were traced by agents of the Foot Clan to the O'Neil Farm, while Elizabeth learned of the Turtles in a very dramatic way. After April and Splinter had declared her necessary, Elizabeth received from her daughter a vial of Ooze, which she used to heal her husband from the effects of his stroke. Then they returned to New York to be closer to their daughter, and opened their old antique shop again. They later invited Casey to live with and work for them there, which attracted the ire of Hun. Fortunately, their neighbors on the same street came out to assist the O'Neils, and peace was restored.

During the Triceraton invasion, John and Elizabeth remained in the Second Time Around store for some days, anxious about April's safety. Eventually April and Baxter Stockman brought them to the T.C.R.I. building, where John and Elizabeth were reunited with their daughter.

In the 2014 film, April's father was referred to as Dr. O'Neil and was portrayed by Paul Fitzgerald. He was a scientist working at Sacks Groups Ltd as one of the creators of the TCRI mutagen. Splinter was the one who informed April that her father was killed by Eric Sacks and the Shredder destroying their lab.

Mrs. O'Neil

There have been different versions of Mrs. O'Neil in the TMNT franchise.

In the Mirage Comics, she was named Bridget O'Neil.

In the 2012 animated series, Mrs. O'Neil (voiced by Renae Jacobs) was the loving wife of the psychologist Kirby O'Neil, and the late mother of sixteen-year-old April O'Neil. Many decades ago, when she herself was a child, her grandfather had discovered the Krang residing deep underneath the O'Neil's family farmhouse. After unmistakably awakening the Krang, the brain-like extraterrestrial creatures paid him back by performing experiments on him and his entire bloodline; including Mrs. O'Neil. In her adult years she had fall in love with and married an Irish scientist by the name of Kirby O'Neil. She was eventually captured and experimented on by the Krang while she was pregnant with April. As a result, her daughter was born a human/Krang hybrid mutant; possessing an array of exceptionally powerful psychic abilities, as a result of her Krang DNA. When April was six years old, the Krang came for her. While her husband was able to escape to New York City, Mrs. O'Neil was recaptured and "put into stasis." One decade later (in Episode 55 " Buried Secrets"), she was discovered by the Turtles, Casey Jones, and her teenage daughter. She explained how her whole family's difficulties with the Krang raged on for many years, and seemed happy to be reunited with her daughter. She wondered of Kirby's whereabouts, to which the Turtles assured her that he was "on a safari in Puerto Rico." She attracted the suspicions of the sharp and intuitive Michelangelo, who planned to expose her true motives by any means. She was later revealed to be a clone of the real Mrs. O'Neil as an infiltration experiment infused with the human DNA of the real Mrs. O'Neil and Krang DNA; thus having only her memories. April expressed her sadness at losing her family all over again, even if it truly was not her mother, and wondered if she was indeed gone forever or was still alive somewhere. A family photograph of her, alongside her husband and infant daughter, was shown in ''"The Krang Conspiracy"'' which had been kept by Jack Kurtzman. She was first referenced by April in "Karai's Vendetta". April mentioning the tragic loss of her mother as a child, caused Karai to feel sympathy for April, as she, too had lost and never knew her own mother, Tang Shen.

In the IDW Comics, April's mother was named Elizabeth O'Neil, who was a journalist (similar to April's status as a reporter from various TMNT media adaptations). Elizabeth was first introduced when April, the Turtles, Casey, and Splinter were forced to flee New York to their home in Northampton. While April and Casey worked on keeping the Turtles and Splinter a secret, Elizabeth showed having some knowledge of the mutagen due to her past career as a reporter. When the Foot Clan tracked them down and attacked Elizabeth along with her husband John found out about the existence of the Turtles and Splinter. After the group fled, Elizabeth used a part of the mutagen April left behind to help heal John from his stroke due to its healing properties. Afterwards, the two moved to New York and took up residence in the Second Time Around store, where they maintain a good relationship with their daughter and her other friends, where they also allowed Casey to stay with them due to issues he has with his father.

Justice Force

The Justice Force is a superhero team that was around during the Golden Age.

First appearing in the Mirage Comics issue "Dome Doom", the Turtles and Casey meet the older versions of the Justice Force in Northampton at the time when their former member Doctor Dome attacked them with his Domeoids. The fight ended when Battlin' Bernice's daughter named Ananda showed up to chastise Doctor Dome for ruining her mother's life. Stainless Steel Steve broke up the argument and offered Doctor Dome a redemption which he took. When Lilith swore vengeance on Shadow Jones for the death of Sloan, April and Casey asked Stainless Steel Steve and Metal Head to help Splinter watch over their stepdaughter.

In the 2003 TV series, the Justice Force first appears in the episode "Return of the Justice Force". The Turtles and Casey head to Northampton where they enter Steve's comic book store to look for a lost issue that would've helped Michelangelo know the fate of Battlin' Bernice. They meet the Justice Force when Doctor Dome started using his Domeoids to abduct them. It was soon discovered that Doctor Dome's secret daughter with Battlin' Bernice named Ananda was behind this where she wanted revenge on the Justice Force for letting her mother die. When Ananda was defeated, Doctor Dome reconciled with his daughter and also reconciled with Stainless Steve Steel. In later episodes, Ananda and Metal Head formed a second incarnation of the Justice Force that consisted of Silver Sentry, Chryalis, and Tsunami with Stainless Steel Steve in an advisor role and Zippy Lad training the new recruits. Their membership was later expanded with Nobody, Raptarr, and Nano in the episode "Membership Drive" while also gaining Michelangelo as the Turtle Titan. The Justice Force are among the allies of the Turtles who assist them in the fight against the Demon Shredder's forces. The episode "Super Power Struggle" revealed another former member called the Green Mantle who lost his powered cape in a battle and was found by Raphael during the fight with Dr. Malignus. When Dr. Malignus was defeated, the security guard at the convention turned out to be Green Mantle's true identity of Al Gordon who reclaims the special cape and rejoins the Justice Force. The Justice Force are among those who attended April and Casey's wedding and helped to fight the Cyber-Shredder.

Stainless Steel Steve

Stainless Steel Steve is the leader of the Justice Force who gets his name from the round metallic saucer on his head which can smash through anything.

In Mirage Comics, Stainless Steel Steve and Doctor Dome competed for the love of Battlin' Bernice. In the present, Stainless Steel Steve runs a comic book store with Metal Head as the stock boy when Doctor Dome began to target his old teammates. When Ananda came into view and broke up the fight, Stainless Steel Steve offered Doctor Dome a chance at redemption.

Stainless Steel Steve appears in the 2003 animated series voiced by David Wills impersonating Adam West. During the Justice Force's fight with Doctor Dome, Michelangelo mentioned that Stainless Steel Steve once saved Doctor Dome from the Living Volcano and Doctor Dome once cured Stainless Steel Steve of the creeping alien rust. When Ananda was defeated and had reconciled with Doctor Dome, Stainless Steel Steve thanked the Turtles and Casey Jones for their help and even made Michelangelo an honorary member of the Justice Force. In "Super Power Struggle", Stainless Steel Steve appeared in an advisor role to the second incarnation of the Justice Force at the time when Raphael found the Green Mantle's powered cape. Following Dr. Malignus' defeat, Stainless Steel Steve picked up Al Gordon from the hospital and reunited with the Justice Force while reclaiming his cape.

Metal Head

Metal Head is a synthetic and dwarfish member of the Justice Force who can harden his hair to be used for weapons and change the physiology of his form. When Stainless Steel Steve opened his comic book store, Metal Head worked as the stock boy.

Metal Head appears in the 2003 animated series voiced by Wayne Grayson. He is the first Justice Force member to be abducted by the Domeoids when the attack Steve's comic book store.

Joey Lastic

Joey Lastic is an elastic member of the Justice Force.

Joey Lastic appears in the 2003 animated series voiced by Oliver Wyman. In his old age, he has been shown to have trouble retracting his limbs and neck.

Zippy Lad

Zippy Lad is a member of the Justice Force with super-speed. In his old age, he can still move fast in his electronic wheelchair.

Zippy Lad appears in the 2003 animated series, voiced by Andrew Rannells in his first two appearances and by Sean Schemmel in his third appearance. In "Membership Drive", Zippy Lad was seen training the Justice Force's new recruits.

Doctor Dome

Doctor Dome is a dome-headed member of the Justice Force with genius-level intellect who can control his robots called Domeoids.

In Mirage Comics, he and Stainless Steel Steve competed for the love of Battlin' Bernice. When the Justice Force disbanded, Doctor Dome had a falling out with them. Years later, Doctor Dome started targeting the Justice Foce members to draw out Battlin' Bernice which also brought him into conflict with the Turtles and Casey Jones. When Battlin' Bernice's daughter Ananda shows up to break up the fight, she chasitizes him. Stainless Steel Steve offered Doctor Dome a chance at redemption which he accepted.

Doctor Dome appears in the 2003 animated series, voiced by Stuart Zagnit. He was suspected of being behind the abductions of the Justice Force when they arrived in his lair. When Doctor Dome clashed with Stainless Steel Steve where he blamed him for what happened to Battlin' Bernice, Michelangelo tried to get them to remember the times when they worked together like when Stainless Steel Steve once saved Doctor Dome from the Living Volcano and Doctor Dome once cured Stainless Steel Steve from the creeping alien rust. It is then discovered that Doctor Dome's secret daughter Ananda was behind this where she wanted revenge on the Justice Force for letting her mother die. The Turtles threw off Ananda's concentration on the Domeoids to defeat her. Doctor Dome then reconciled with Ananda. Michelangelo recapped to Joey Lastic that the strategy to defeat Ananda was the same one the Justice Force used to defeat the Grim Repo in issue #57 when he gained control of Doctor Dome's brain.

Ananda

Ananda is the daughter of Battlin' Bernice who inherited her mother's super-strength.

In Mirage Comics, Ananda shows up to interrupt the fight between Doctor Dome, the Justice Force, the Turtles, and Casey Jones where she chasitizes Doctor Dome.

Ananda appears in the 2003 animated series, voiced by Amy Birnbaum in most appearances and by Veronica Taylor in "The Journal". This version is the daughter of Battlin' Bernice and Doctor Dome, inheriting the latter's powers. When her mother died, Ananda blamed her father and the Justice Force enough to control the Domeoids into abducting the Justice Force and framing her father. The Turtles were able to throw off Ananda's concentration on the Domeoids to defeat her. In later episodes, Ananda and Metal Head formed a second incarnation of the Justice Force.

Pantheon

Aka

Aka is the oldest sibling of the Pantheon in the IDW comics.

Gothano

Gothano is a member of the Pantheon and is more quite than his siblings and is the keeper of knowledge.

Toad Baron

Toad Baron is a member of the Pantheon who wants to make parties for both mortals and immortals to enjoy.

Al'Falqa

Al'Falqa is a mutant falcon from an unnamed city in Saudi Arabia who is exclusive to the ''Teenage Mutant Ninja Turtles Adventures'' comics. Al'Falqa encounters the Turtles when they were traveling in Saudi Arabia. They helped Al'Falqa protect the mysterious Black Stone, which was about to be stolen by Shredder and Verminator-X.

Punk Frogs

The Punk Frogs are a group of mutant frogs who are the counterparts of the Ninja Turtles.

In the 1987 series, the Punk Frogs are created by Shredder when mutagen landed in their part of the swamp. Shredder convinced them that he was a good guy and to be his warriors where he named them after would-be conquerors and dictators. Shredder trained them to fight the Turtles whom he had convinced the frogs into believing were bad guys. Each of the frogs were named after Shredder's own "heroes". After the Turtles saved them from being captured by Captain Hoffman, they realized that the Turtles were good guys and that the Shredder was a bad guy and broke ties with him. Afterward, the frogs became friends with the Turtles, with Attila emerging as the group's leader. They may even be described as having the character traits of the Ninja Turtles.

In '' Ninja Turtles: Superman Legend'' the Punk Frogs (except Napoleon Bonafrog) make a cameo.

In the 2012 series, the Punk Frogs were created by mutagen poured into their pond near the O'Neil family farmhouse by Mrs. O'Neil's Krang clone. Besides Attila, Genghis, Napoleon, and Rasputin, there are a substantial number of Frog Soldiers working for them. Evidently remembering the actions of humans in destroying their swamps to make room for cities, they swore revenge upon them, and briefly considered the Turtles brothers in need of liberation until learning that they were friends with April and Casey. Afterwards, the Punk Frogs

In the comic series published by IDW, the Punk Frogs are a faction in Mutant Town ever since Old Hob's mutagen bomb went off in a part of New York City. Besides Atilla, Genghis, Napoleon, and Rasputin, there are other members of the group consisting of Bloody Mary, Bonnie, Clyde, and Zetian. The Turtles came into conflict with them when the Punk Frogs thought that one of the Turtles kidnapped Bonnie. When the Turtles claimed that they didn't do it during the attack, they also claimed that it must've been some other mutant turtle that was the culprit. Clyde and the Turtles find that Dr. Jasper Barlow cobbled Bonnie together with a prosthetic shell that was implanted with a dragon scale and other turtle-like parts where he called her "Venus". After Dr. Barlow was thwarted, Clyde took Bonnie's original arms back to the Punk Frogs where he informed them that Bonnie is "dead" and that the Turtles weren't responsible.

The Punk Frogs appear as cameos in the 2022 beat-'em-up '' Teenage Mutant Ninja Turtles: Shredder's Revenge''.

Attila the Frog

Atilla the Frog is a member of the Punk Frogs. He is named after Attila the Hun. He is armed with a spike ball and chain.

In ''Mutant Turtles: Superman Legend'', Attila makes a cameo.

In the 2012 animated series, Attila the Frog (voiced by Maurice LaMarche) is the leader of the group. Much of his behavior was inspired after actor Marlon Brando, and inspired by his characters in ''The Godfather'' and ''Apocalypse Now''.

In the IDW comics, Attila is the tall leader of the Punk Frogs, wields a morningstar, and is very protective of the group.

Genghis Frog

Genghis Frog is a member of the Punk Frogs. He is named after Genghis Khan.

In the 1987 animated series, Genghis Frog (voiced by Jim Cummings) is a Punk Frog that is armed with an axe.

In ''Mutant Turtles: Superman Legend'', Genghis makes a cameo.

In the 2012 animated series, Genghis Frog (voiced by Kevin Michael Richardson) served as the General of the Frog Soldiers.

In the IDW comics, Genghis Frog is a tall member of the Punk Frogs with a fierce personality and wields an axe.

In '' Teenage Mutant Ninja Turtles: Mutant Mayhem'', Genghis Frog is voiced by Hannibal Buress. He is a member of Superfly's gang. Genghis Frog eventually joins the other gang members in switching to the Turtle's side and becoming part of their extended family.

Napoleon Bonafrog

Napoleon Bonafrog is a member of the Punk Frogs. He is named after Napoleon Bonaparte.

In the 1987 animated series, Napoleon Bonafrog (voiced by Pat Fraley in most appearances, Townsend Coleman in "Napoleon Bonafrog: Colossus of the Swamps") is a Punk Frog that is armed with a whip. Though normally the Turtles ally, he was once transformed into a hulking slave of Krang and Shredder.

In the 2012 animated series, Napoleon Bonafrog (voiced by Jon Heder) is depicted as a clumsy frog disliked by his brethren, which leads to his befriending Michelangelo. Much of his behavior was a nod to Heder's character in ''Napoleon Dynamite''.

In the IDW comics, Napoleon is a tall and well-built member of the Punk Frogs and wields a whip.

Rasputin the Mad Frog

Rasputin the Mad Frog is a member of the Punk Frogs. He is named after Grigori Rasputin.

In the 1987 animated series, Rasputin (voiced by Nicholas Omana) is a Punk Frog who wields a bow and arrow.

In ''Mutant Turtles: Superman Legend'', Rasputin makes a brief cameo.

In the 2012 animated series, Rasputin (voiced by Maurice LaMarche) is the adviser to Attila the Frog.

In the IDW comics, Rasputin is a bulky member of the Punk Frogs with a reasonable personality and wields a crossbow.

Renet Tilley

Renet Tilley is a rather reluctant, spoiled, and impulsive teenager whose parents, also denizens of the 79th Level, hoped that apprenticing her to Lord Simultaneous would help her develop some kind of common sense. Curious and impatient as she was, she did not care very much for studying. Renet first met the Turtles fooling around, when one day out of boredom she snatched her master's Time Scepter and was caught by him. She replied immediately and time-traveled off with Lord Simultaneous' Sceptre of the Sands of Time to Earth – more specifically to 1986 New York City. Renet and the Turtles became friends, but Simultaneous appeared and sent Renet into a panic. Fleeing Simultaneous further, she and the Turtles went to 1406 A.D., straight into a castle siege. The castle belonged to the dark mage Savanti Romero, a former, but exiled student of Simultaneous, and the besiegers were the soldiers of Cerebus, who was after some scrolls, that Romero had stolen. Romero also managed to grab the Time Scepter, and the Turtles and Renet had to contend with Cerebus' help to attack the castle and get the Sceptre back from Savanti Romero. The force was no match for Romero's magic. Before it came to the worst, Simultaneous appeared. Romero attacked Lord Simultaneous who took the Time Scepter again and cast Savanti into prehistoric times. He handed the scrolls to Cerebus, sent the Turtles back again to their time, and sent Renet to wipe dust in his huge library. Later, she assists the Turtles in defeating Savanti Romero in prehistory when Romero plans to alter the Earths orbit and prevent the asteroid impact that wiped out the dinosaurs, meaning humanity, and mutant Turtles, will never exist. After defeating Romero, the group is stranded in prehistory for several months after the Scepter is lost in the ocean, but it is eventually recovered. Renet makes a third appearance saving the Turtles from Romero's demonic bride, Juliet Romero. This time she appears as a deity-like woman with full control over her time manipulating powers.

In the 2003 animated series, Renet (voiced by Liza Jacqueline) undergone some minor changes in her backstory, where she is shown to be quite a scatterbrained person who came to her friends with good intentions, but with little practical skill she caused some problems across space and time. This leads to her transporting herself and the Turtles back to the medieval age to which Savanti Romero was banished, which resulted in the loss of the Time Scepter to Ultimate Drako, the fused form of the Ultimate Ninja and Drako. It would later be recovered and entrusted to Renet again, leading to another encounter with Romero in the Cretaceous Period. She would later appear at April and Casey's wedding, watching from a distance.

In the IDW comics, Renet has her debut in a special story, where she "invites" the Turtles to the interdimensional Battle Nexus tournament. In this version she is also Lord Simultaneous' pupil in magic, dimension travel, and apparently his successor in the Dimensional Council. At the time in which she appears for the first time, the cruel Councilor Nieli hosted a series of merciless gladiator fights, which only he really liked. Renet was also against the games for personal motives, because one of the champions, the warrior Baltizar, had won her heart. For this reason, they brought the Turtles to the hub of the dimensions and helped the culmination of these events to instigate an uprising against Nieli which meant that Nieli was banished and the games were transformed into a far more peaceful affair.

In the 3D CG 2012 animated series, Renet (voiced by Ashley Johnson) is a young immature timestress from the future who, like Michelangelo, makes rash decisions that sometimes gets her and others into trouble. She is also becomes the object of Michelangelo's affections. After taking her master's time scepter to keep it out of the hands of mutant time master Savanti Romero, she traveled back in time to get help from the Ninja Turtles. She ended up banishing Savanti to the Middle Ages, but was forced to pursue him to preserve history. This eventually got Renet and the Turtles to lose the scepter to Savanti, but after a series of conflicts, they recovered it. However, while traveling them back to their present, she lost the Turtles to sixteen-years-prior Tokyo, Japan, due to the mystical time scepter taking matters into its own hands. After six months from her perspective, she was able to locate them and return them to the twenty-first century. In the fifth and final season of the show, ''"When Wolds Collide, Part One"'' a hologram of her is first seen in Michelangelo's room. She appears to still keep in touch with the Turtles, particularly Mikey, who still has a crush on her. In the ''Monstrous Tales'' saga (consisting of four episodes ''"The Curse of Savanti Romero"'', ''"The Crypt of Dracula"'', ''"The Frankenstein Experiment"'' and ''"Monsters Among Us!"'') Renet returns to 21st century New York City, once again needing the Ninja Turtles help in stopping her Savanti Romero from making an unbeatable army of the undead by traveling back to the ancient past, to the time when Dr. Frankenstein began his monstrous scientific experiments.

Tattoo

Tattoo is a sumo wrestler whose tattoos can be used as weapons.

In the ''Teenage Mutant Ninja Turtles'' episode "Planet of the Turtleloids" Pt. 1, Tattoo (voiced by Rob Paulsen) was not a human being at all but a hamster mutated by the Shredder into human form. The Ninja Turtles encounter him vandalizing a pet shop. After a scuffle in which a confused angered Tattoo wraps himself up in electrical wire, he is electrocuted and reverted into hamster form. Leonardo deduces that Shredder kidnapped the hamster from that very same pet store and all he wanted was to return home.

In the Archie Comics he asked Splinter for a favor and requested that the TMNT rescue his chihuahua dog "Inky" from a group of Yakuza who wanted him to throw his next fight for gambling purposes. Tattoo states that he can't lose the match as it will ruin his career. The TMNT vow to help him get his pooch back without having to throw the match. While Tattoo is engaged in his Sumo match, the TMNT, Ninjara and the Warrior Dragon infiltrate the mob headquarters and rescue the feisty pup. Tattoo wins his match and the Turtles return Inky to his beloved master. The wrestler awards Leonardo a katana as thanks for saving his dog.

The Warrior Dragon

The Warrior Dragon debuted in the Fall 1990 issue of Teenage Mutant Ninja Turtles Magazine. He later returned in the Teenage Mutant Ninja Turtles Adventures comics series published by Archie Comics in 1991 as a New York City fireman named Chu Hsi. He was created by Mirage Studios artist Ryan Brown.

In 1992 Playmates Toys released an action figure of the Warrior Dragon named Hothead and cast in red plastic. Using the Hothead name, the character appeared in the NES version of '' Teenage Mutant Ninja Turtles: Tournament Fighters''

Angel

Angel is supporting character in the 2003 animated series and later appearing in the IDW comics under the name Angel Bridge in the latter. Additionally in the IDW Comics, Angel served as the vigilante Nobody, using an exo-suit created by the Turtle's ally Harold Lillja. In the Mirage Comics volume 3 by Image comics there is a female ninja named Angel who is one of Pimiko's minions.

Utroms

Utroms are a race of brain-like aliens in the franchise. They first appeared in the Mirage comics and later in the IDW comics. They also appear in the 2003 television series as allies for the Turtles to stop a rogue Utrom named Ch'rell, the modern Shredder led by one named Mortu (voiced by Dan Green). Appointed by the Utrom Council, Mortu was the captain of an Utrom ship that crashed on Earth a thousand years ago in Japan. After the crash, he remained the field-leader of the marooned Utroms, and worked as their liaison to the Humans. In the modern day, this makes him CEO of the front company TCRI. His name is "Utrom" backwards.

In the '' 2012 series'', the Utroms hail from Dimension X and the notable members are Bishop, Pawn, Rook and Queen.

In the series ''Rise of the Teenage Mutant Ninja Turtles'', one rogue member was revealed to be the creator of the armor worn by the Shredder, which many believed to be an Oni.

Alopex

Alopex is a mutant arctic fox who debuted in the IDW comics. Originally a normal arctic fox in Alaska, she was captured by scientists and taken away from her family to be experimented on with mutagen, granting her human-like intelligence and altering her body. She was rescued from the laboratory by Shredder and recruited into the Foot Clan, whom she loyally served for years. In her first appearance in ''Teenage Mutant Ninja Turtles: Micro-Series'', she attempts to trick Raphael into bringing her to their lair, but he manages to catch onto her scheme.

Shredder later tested her commitment to the Foot by burning down the forest she grew up in. While she continued serving him, she vowed to kill him one day. She ultimately defects to the Turtles' side when they fought the Shredder to reclaim a brainwashed Leonardo from him. While their relationship with her is tense at first after she follows them to April's parents' farm, she ultimately gains their trust thanks to Leonardo vouching for her and bonds with Raphael. After Splinter kills Shredder and takes over the Foot Clan, she helps train the new recruits and forms a close friendship with Angel aka Nobody.

However, she is brainwashed by Kitsune into an assassination attempt on Splinter. Though it's successfully prevented, she runs back to Alaska to fight of Kitsune's influence, and with help from Raphael and Angel, she's able to rid herself of it completely. She returns home and begins dating Raphael while helping the Turtles monitor Mutant Town as part of the Splinter Clan (even getting her own green mask in the process), but she later separates from them when they decide to work together with Shredder to prepare for the Rat King's Armageddon Game and adopts Old Hob's mutated weasels to form the Claw Clan.

Alopex appears in the 2012 series voiced by Minae Noji. This version is a mutant red fox who possesses superhuman speed and the sister of recurring series villain Tiger Claw. When she and her brother were children in Japan, they wandered into a portal on a playground and ended up getting captured by the Kraang, who mutated and experimented on them for months. When they eventually escaped, they ran away from home knowing the rest of their village would see them as monsters, joining a circus and later becoming top-level assassins. Alopex developed a vendetta against her brother for forcing her into a life of crime and murdering their parents and rebelled against him, cutting off his tail in the process. In "Tale of Tiger Claw", she comes to New York to finish her brother off and steals the Cursed Blades of Vengeance to do so, accidentally cursing Casey Jones in the process. With the help of the Turtles, she is able to defeat her brother, but refrains from killing him after listening to Leonardo's warnings of how vengeance could impact her life. When Tiger Claw attempts to shoot her as she begins to walk away, she cuts off his arm in retaliation before disappearing.

Old Hob

Old Hob, or just Hob, is a male mutant alley cat in the IDW comics. He was mutated right after the Turtles and Splinter, still animals at that time, had been stolen by Foot ninjas from the ''StockGen'' laboratories. He tried to abduct Raphael as his dinner, only to have his right eye clawed out by Splinter. Transformed by mutagen residue sticking to the Turtles and Splinter, he at first worked as Stockman's henchman until the latter betrayed him. Embittered by his experiences with humans, he became a terrorist for mutantkind and formed his own version of the Mutanimals, later going so far as to transform a large portion of New Yorkers into mutants using a mutagen bomb. At first antagonistic towards the Turtles, he gradually develops a mutual understanding with them and lends them his assistance when asked.

In the ''Saturday Morning Adventures'' spinoff series, Hob also appears as the leader of The Pantheon.

Lita

Lita is a pre-adolescent female mutant albino turtle featured in the IDW comics. Originally a human albino child, she fell victim to Hob's mutagen bomb with which he turned a huge number of New York citizens into mutants, and was subsequently abandoned by her parents. She lived on the streets in the newly formed ghetto of Mutant Town until she was taken in by the Turtles. She and her new family also encounter a future version of herself, named Big Lita, an apprentice to Time Mistress Renet. In the course of events in which Donatello tries to avert the menace posed by the time-travelling devourer Armaggon, she is turned back into her human form by Bob, Leonardo's student-turned-villain.

Metalhead

Metalhead is a robotic Turtle that usually has some link with Donatello, either having been designed by him, or reprogrammed by him.

Klunk

Klunk is a stray ally cat Michaelango adopted and Klunk appears in the Mirage comics and in the 2003 animated series. Klunk later appears in the IDW comics.

Cudley the Transdimensional Cowlick

Cudly the Transdimensional Cowlick is a giant cowhead with the ability to teleport and is an ally of the turtles. Cudly appeared in the Archies comics and later the IDW comics.

Antagonists

Foot Clan

The Foot Clan is an evil ninja organization that is usually run by the Shredder.

The Shredder

Shredder is the leader of the Foot Clan and arch-enemy of the Ninja Turtles.

Karai

Karai is a high-ranking member of the Foot Clan employed as Shredder's second-in-command and both an ally and enemy of the Ninja Turtles.

Bebop and Rocksteady

Bebop and Rocksteady are a mutant warthog and rhinoceros employed by Shredder and enemies of the Ninja Turtles.

Tatsu

Tatsu is a Foot Clan Warrior and the Shredder's second-in-command in ''Teenage Mutant Ninja Turtles, Teenage Mutant Ninja Turtles II: The Secret of the Ooze'', and the 2012 animated series.

In the films, Tatsu (portrayed by Toshishiro Obata, voiced by Michael McConnohie) is a skilled martial artist who oversees the training of Shredder's army. He rarely speaks except to Shredder or to give orders to the Foot Ninja or those training to join the ranks. He leads the attack on April O'Neil's home in the first film, and later fights with Casey Jones at the Foot lair. Though initially overpowering the vigilante, he is defeated after Casey finds a golf club among the various stolen items stockpiled by the Foot and uses it to subdue Tatsu. In the second film, he is shown to have escaped police custody, and attempts to take leadership of the Foot until the Shredder is revealed to be still alive. He leads the Foot Ninja who steal the mutagen from TGRI, and helps oversee the rebuilding of the Foot army. However, he is easily defeated near the end of the film by the Turtles all slamming their back shells into him.

In the 2012 animated series, Hattori Tatsu (voiced by Michael Hagiwara) is a blind swordsman, but still Shredder's loyal underling. Here, he was in charge of the Foot Clan in Japan whenever the Shredder was absent, and also mentored Karai. After the death of the Super Shredder, Tatsu came to New York to seize control of the remainder of the Foot Clan from Tiger Claw only to face the Turtles and Karai and be opposed by Tiger Claw. His soul is drained from him by Kavaxas.

Despite being a minor character, Tatsu appears as a boss in '' Teenage Mutant Ninja Turtles: The Hyperstone Heist''.

Tokka and Rahzar

Tokka and Rahzar are a mutant alligator snapping turtle and gray wolf employed by Shredder and enemies of the Ninja Turtles.

Tokka and Rahzar first appear in '' Teenage Mutant Ninja Turtles II: The Secret of the Ooze'' with Tokka face-performed by Rick Lyon, in-suit performed by Kurt Bryant, and voiced by Frank Welker while Rahzar is face-performed by Gord Robertson, in-suit performed by Mark Ginther, and also voiced by Frank Welker. As a snapping turtle and gray wolf abducted from the Bronx Zoo by the Foot Clan, Tokka and Rahzar were mutated into more intelligent humanoid forms by kidnapped TCRI professor Jordan Perry under Shredder's orders, but during the process, Perry secretly altered the mutagen with the DNA of human infants. This eventually gave the duo childish personalities, thus humiliating Shredder by thinking the word "master" meant "mama". However, Perry had sympathy for them and showed Shredder their full obedience, thus convincing to keep them around. The duo even proved to be more than a match for the Ninja Turtles. After failing to stop them from rescuing Perry, Shredder had them cause destruction to an old neighborhood. The next day, Shredder had the Foot encounter April and have her deliver the Turtles a message telling them to meet the Foot Clan at a construction site near the docks or else Tokka and Rahzar will be sent out again. This time, they will be sent into Central Park. The Turtles note that Tokka and Rahzar won't avoid any people there. Perry had prepared a retro-mutagen for the Turtles to use, which retro-mutated both Tokka and Rahzar after a brief battle during a Vanilla Ice concert. The fate that followed the duo's retro-mutation remained unknown, but it's most likely that they could've been carted back to the zoo.

In the 1987 animated series, Tokka (voiced by Rob Paulsen) and Rahzar (voiced by Townsend Coleman) were out-of-control alligator snapping turtle and gray wolf zoo exhibits mutated into their current mutant forms when Shredder infected their habitats. Following their first encounter with the Ninja Turtles at the Crystal Palace Mall, Tokka was captured by a mutant hunter and taken to Dirk Savage, leaving Rahzar to report back to Shredder. Rahzar made a big deal with Tokka's capture and went to fight Dirk alone, yet it was unclear of whether or not the duo was reunited following the rescue mission.

In the series finale of the 2003 animated series titled "Turtles Forever", two Cyber Foot members are mutated into the 2003 incarnations of the characters and play a brief role as members of the Mutant Foot Soldiers.

In the 2012 animated series, Tokka (vocal effects provided by different sound effects) and Rahzar (voiced by Clancy Brown) are given drastically different origins. As a result, they were never seen together in this series.
::Rahzar is introduced first as Chris Bradford, a celebrity martial arts star who is a prized pupil of Shredder, owning chain of dojos across the country with their ninjutsu classes used for the purpose of recruiting Foot Ninjas. When Shredder learned of Splinter's presence in New York, he sent by Bradford to find and kill both him and the Ninja Turtles, first tricking Michelangelo into a faux friendship on a social media website. Bradford revealed his deception when he had Michelangelo captured, sparking a bitter hatred from him. However, after he failed to trick the Turtles into leading him and the Foot to Splinter and numerous repeated failures, Shredder became enraged at his incompetence. During a fight with the Turtles, Bradford and Xever were doused with mutagen, and as a result of being earlier bitten in the knuckles by Shredder's pet akita, Hatchiko, Bradford mutated into an 8 ft. humanoid mutant akita with a spiked back, a large left arm, heightened senses and superhuman strength simply dubbed Dogpound. However, he hated his larger, clumsier form. Dogpound was later mutated into a near-skeletal werewolf-like version of his previous form with more agility, which he found more acceptable. Being given the new name Rahzar by Michelangelo, he continued to serve the Shredder until his death at the hands of Leatherhead towards the end of the fourth season. Rahzar was resurrected by the demon Kavaxas in the fifth season, only to be revealed to be serving as Kavaxas's puppet. Rahzar fell into the Netherworld during Kavaxas's attack on the mortal realm, never to return.
:: Tokka, on the other hand, is introduced as Tokka Picasso, a monstrous female turtle-like alien assigned by the Utroms to guard the final piece of the Black Hole Generator. In her first appearance, she attempts to recover the Black Hole Generator piece from when Lord Dregg was able to steal it. However, the piece was seemingly destroyed by the explosion of a dwarf star triggered by the Triceratons, though Tokka's son Chompy survived and remained with the Turtles. Tokka subsequently was revealed to have survived the ordeal and ventured to Earth to collect her son but decided to allow him to stay with Raphael after realizing he was in good hands with him. Tokka departed Earth, though Raphael conceded that one-day Chompy would have to return to the stars with his mother.

In the comic series published by IDW, Tokka and Rahzar appear as two of Old Hob's mutant creations. He was to sell them as "recruits" to Karai and the Foot Clan.

Chrome Dome

Chrome Dome is a robotic member of the Foot Clan.

Chrome Dome first appeared in the 1987 animated series voiced by Peter Renaday. His first appearance in the show was in the two-part episode “ Planet of the Turtleoids,” in which he is built by Shredder to supervise the Foot Soldiers in the construction of the Technodrome Mark-II. He was destroyed by the Turtles by disabling a main chip on his back. He returned in another episode "Night of the Rogues" with several other villains as one of Shredder's Rogues. He was defeated when Casey Jones crushed him in hydraulic press.

A series of Chrome Dome robots appear in the 2012 series voiced by Nolan North. They are modeled after Chris Bradford's dark ninja outfit.

Foot Elites

The Foot Elites are the elite squads of the Shredder in the Mirage and IDW comics. The Foot Elite also appears in the 2003 animated series.

Foot Mystics

The Foot Mystics are Foot Ninjas that mastered the art of magic. They first appeared in the 2003 animated series and later in the Mirage series. In the 2012 animated series, Karai's friend Shinigami is a Foot Mystic.

Koya

Koya is a mutant brown falcon who only appears in the IDW comics.

In the IDW comics, Koya was Shredder's pet, and used for reconnaissance. Following the "City Fall" storyline in the IDW Comics, Koya later mutated into a humanoid form. At first a fierce antagonist of the Turtles, she develops respect for them when, during a mission in New York, she and her team led by Karai are forced to crash-land in Mutant Town and are nursed back to health by the Turtles.

Bludgeon

Bludgeon is a mutant hammerhead shark who appeared in the IDW comic "Teenage Mutant Ninja Turtles" issue 37. He was created by the Shredder and used alongside Koya as his personal mutant strike team. After Bludgeon is permanently blinded by Donatello/Metalhead during the Vengeance storyline, he finds enlightenment and turns from assassin to self taught mystic, even to the point of training Venus.

Shredder Clones

The Shredder Clones are the Clones of the Shredder. They consist of:

* Claw Shredder – A clone of Shredder with crustacean-like claws.
* Mini-Shredder – A small clone with a wrist blade on each arm.
* Shiva Shredder – A hulking brute with four arms.

The Shredder Clones first appeared in the Mirage Comics. Shredder claims that they were created through a combination of ancient magic, modern science, and a Paramecia Coloniex (a species of colony worms created by the Foot Clan) where they turned the remains of someone into a replica of said person while claiming that the Paramecia Coloniex fed on Oroku Saki's charred remains

The Shredder Clones appear in the 2003 animated series. They were referred to as Mutant Shredder Clones where they were kept in liquid vats within the Foot Clan's headquarters. They resembled the Shredder more where the Claw Shredder was less crustacean-like. The Turtles and Splinter fought them where the Claw Shredder was emerging from the rubble and the Mini-Shredder and Shiva Shredder were last seen on top of a falling elevator. Their fates after that were unknown.

The Shredder Clones appear in the 2012 series, voiced by Kevin Michael Richardson. They were referred to as the Shredder Mutants where they were created by Baxter Stockman through a combination of Shredder's DNA and different crustaceans. They are first seen in "Return to New York" where they served as the guards to Stockman-Fly's laboratory. The Turtles fought them and Stockman-Fly during a mission to rescue Splinter. Once Splinter regained his mind, he defeated the Shredder Mutants by knocking them towards the fan beneath the mutation device. In "Attack of the Mega Shredder", Leonardo and Michelangelo sneak into Stockman-Fly's lab to obtain some Brain Worms and are caught by Rocksteady, Bebop, and the Shredder Mutants. When Rocksteady and Bebop planned to mutate the Turtles, Leonardo states that they should mutate more animals. This causes Rocksteady and Bebop to dump the Shredder Mutants into the mutagen vat which fused them into a gigantic blob-like super-mutant dubbed Mega-Shredder as it goes on a rampage in New York. When the Mega-Shredder's young Oroku Saki-like tongue was cut off by the Turtles due to it serving as the brain, the Mega-Shredder dies.

Krang

Krang is an alien warlord that comes from Dimension X in several incarnations of the series. The 1987 animated series featured him as disembodied brain, others as a rogue Utrom, such as the TMNT comic strips and the IDW comics.

In the 2012 series, Krang is referred to as Kraang Prime, and is the leader of a rogue hive mind faction of Utroms known as "the Kraang".

In '' Teenage Mutant Ninja Turtles: Mutant Mayhem'', a woman named Cynthia Utrom is in charge of TCRI. Her surname and connection with Shredder (which is implied in the post credits scene) suggest that she may be revealed to be Krang in the future sequel.

Rock Soldiers

The Rock Soldiers (sometimes called Stone Warriors) are sentient humanoids that are made from rocks.

In the 1987 cartoon, the Rock Soldiers work for Krang and come from Dimension X. It was revealed in "Michelangelo's Birthday" that they were made when Mutagen fell on some rocks. Different voice actors voiced the generic Rock Soldiers: Rob Paulsen and Peter Renaday.

The Archie Comics version of the Rock Soldiers are the same. It also features the exclusive Rock Soldier Morg.

In the IDW comics, the Rock Soldiers were created by General Krang.

In the 2012 cartoon, the Rock Soldiers work for the Kraang.

General Traag

General Traag is the leader of Krang's loyal Rock Soldiers from Dimension X.

In the 1987 cartoon, Traag (voiced by Peter Renaday) came following the Neutrinos through the dimensional portal. After a small skirmish with the turtles, the Neutrinos teamed up with them and Michelangelo and Donatello sent both Traag and Granitor back through the portal and to their own dimension. Traag would make further appearances in the series until the eight season finale "Turtle Trek". As "Turtle Trek" ended with the Technodrome stranded in Dimension X, it can be assumed Tragg is still in Dimension X somewhere.

He appeared in Archie Comics, the arcade game, and '' Teenage Mutant Ninja Turtles II: Back from the Sewers''.

In the IDW comics, he is called "Captain Tragg" and helped Krang in trying to conquer the home planet of the Neutrinos and completely escaped after the battle in which the END rocket from Professor Honeycutt put all of the weapons of Krang's forces out of action.

In the 2012 cartoon, Traag is a 20 ft lava-spewing rock monster with regenerating abilities, who is in service to the Kraang. He first appeared in "TCRI," where he was brought by the Kraang through a portal that connected TCRI to Dimension X. He proved to be a challenge to the Turtles, so Leatherhead ended up dragging him through the portal back to Dimension X. In "Showdown", Traag was seen guarding the portal when the Kraang upgraded it with a force field. When the Turtles tried to destroy it, they drew the attention of him and the Kraang, so Leonardo used the laser to disintegrate Traag. In "Into Dimension X", Traag teamed up with Granitor to attack the Turtles near the Kraang's facility in Dimension X. However, they were both defeated by Michelangelo in his "savage" suit when he used his voice to break apart the part of the cliff both rock monsters were on. Traag and Granitor alongside smaller Rock Soldiers were later summoned by the '80s Shredder and the '80s Kraang to attack New York where they fought the Ninja Turtles and the Mighty Mutanimals. With help from the local Rocksteady and Bebop, the Ninja Turtles sent the Rock Soldiers back to Dimension X and defeated the '80s Shredder and the '80s Krang.

Sergeant Granitor

Sergeant Granitor is General Traag's right-hand man and one of Krang's loyal Rock Soldiers from Dimension X.

In the 1987 cartoon, Granitor (voiced by Pat Fraley) came to Earth following the Neutrinos through the dimensional portal, originally appearing inside the Technodrome. After a small skirmish with the turtles, where the turtles destroyed the rock warrior's weather-making machine, the Neutrinos teamed up with them and Michelangelo and Donatello sent both Granitor and General Tragg back through the portal and to Dimension X.

He appeared in the arcade game as the 4th scene's (7th stage) boss, and '' Teenage Mutant Ninja Turtles II: Back from the Sewers''.

In the IDW comics, he is called "Sergeant Granitor" and commanded an assault on a Neutrino resistance bunker, to capture the Fugitoid and bring him back to Krang. Due to Granitor's command, the Neutrino bunker was destroyed and many innocent Neutrinos killed along with Fugitoid's family. Later on he and several other Rock Soldiers was searching the demolished base for Fugitoid. Granitor realized that the Fugitoid was in fact Honeycutt and chased him through a portal to Earth. However, the Fugitoid used his morphing abilities to shapeshift himself into human form and get lost in the crowd.

In the 2012 cartoon, Granitor is a 20 ft blue fire-spewing rock monster with regenerating abilities, who resembles Traag (but is pale-pink in color) and is in service to the Kraang. He first appeared in "Into Dimension X", where he teamed up with Traag to attack the Turtles near the Kraang's facility in Dimension X. However, they were both defeated by Michelangelo in his "savage" suit when he used his voice to break apart the part of the cliff both rock monsters were on. Traag and Granitor alongside smaller Rock Soldiers were later summoned by the '80s Shredder and the '80s Kraang to attack New York where they fought the Ninja Turtles and the Mighty Mutanimals. With help from the local Rocksteady and Bebop, the Ninja Turtles sent the Rock Soldiers back to Dimension X and defeated the '80s Shredder and the '80s Krang.

Baxter Stockman

Baxter Stockman is a mad scientist and human enemy of the Ninja Turtles, becoming employed by Shredder in most incarnations.

In the Mirage era, after creating the MOUSERS, with April O'Neil as his computer programmer, Stockman used them to commit strange bank robberies by allowing them to dig small tunnels leading into the vaults. April found out and tried to escape through the MOUSER factory elevator, but Stockman sent the elevator (with her still in it) down to the sewer level, where a squadron of MOUSERS were waiting to capture her. The Ninja Turtles saved her and successfully infiltrated the factory, stopping Stockman and leaving him in police custody. However, he escaped some time later and began using technology from DARPA to build a robot body for him to install his own brain into, making him a cyborg

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