Boos, known in Japan as are fictional ghosts from the ''
Mario
is a character created by Japanese video game designer Shigeru Miyamoto. He is the title character of the '' Mario'' franchise and the mascot of Japanese video game company Nintendo. Mario has appeared in over 200 video games since his c ...
'' and ''
Yoshi
Yoshi is a fictional dinosaur who appears in video games published by Nintendo. Yoshi debuted in ''Super Mario World'' (1990) on the Super Nintendo Entertainment System as Mario and Luigi's sidekick. Yoshi is the title character of the List of Y ...
'' series of
video games
Video games, also known as computer games, are electronic games that involves interaction with a user interface or input device such as a joystick, controller, keyboard, or motion sensing device to generate visual feedback. This feedb ...
. They first appeared as a common enemy in
1988's ''
Super Mario Bros. 3
''Super Mario Bros. 3'' is a platform game developed and published by Nintendo for the Nintendo Entertainment System (NES). It was released for home consoles in Japan on October 23, 1988, in North America on February 12, 1990 and in Europe on ...
'', in which they were called Boo Diddleys (a reference to the American
blues singer
Bo Diddley
Ellas McDaniel (born Ellas Otha Bates; December 30, 1928 – June 2, 2008), known professionally as Bo Diddley, was an American guitarist who played a key role in the transition from the blues to rock and roll. He influenced many artists, incl ...
). Since then, they have been a mainstay in the Mario series, usually appearing as enemies, but occasionally appearing as playable characters in the ''Mario''
spin-off
Spin-off may refer to:
*Spin-off (media), a media work derived from an existing work
*Corporate spin-off, a type of corporate action that forms a new company or entity
* Government spin-off, civilian goods which are the result of military or gove ...
games, or even as allies of
Mario
is a character created by Japanese video game designer Shigeru Miyamoto. He is the title character of the '' Mario'' franchise and the mascot of Japanese video game company Nintendo. Mario has appeared in over 200 video games since his c ...
. They also have prominent roles in ''
Luigi's Mansion
is a 2001 action-adventure game developed and published by Nintendo. The game was a launch game, launch title for the GameCube and was the first game in the ''Mario (franchise), Mario'' franchise to be released for the console; it was released ...
'', ''
Luigi's Mansion: Dark Moon'' and ''
Luigi's Mansion 3''. They are named after the sound that one might make when trying to frighten someone ("boo!"), whereas their Japanese name comes from the verb , meaning 'to be
shy
Shyness (also called diffidence) is the feeling of fear, apprehension, discomfort, lack of comfort, or awkwardness especially when a person is around other people. This commonly occurs in new situations or with unfamiliar people; a shy person ...
'.
A Boo's most common pattern of attack is to sneak up on the player (usually Mario) from behind while they are facing away from them; however, they stop their attack and hide behind their arms if looked at. Being ghosts, they are usually invincible, and unable to be defeated without certain items or conditions.
It has been implied that Boos may have been other living species before they became Boos, but this has not been made clear.
There are also sub-species of Boo based on other species; for example undead Shy Guys become "Boo Guys" while undead
Lakitus become "Fishin' Boo"s.
Concept and creation
In an interview with ''
Nintendo Power
''Nintendo Power'' was a video game news and strategy magazine from Nintendo of America, first published in July/August 1988 as Nintendo's official print magazine for North America. The magazine's publication was initially done monthly by Nint ...
'' magazine, ''Mario'' franchise creator
Shigeru Miyamoto
is a Japanese video game designer, producer and game director at Nintendo, where he serves as one of its representative directors. Widely regarded as one of the most accomplished and influential designers in the history of video games, he i ...
stated that while working on ''
Super Mario Bros. 3
''Super Mario Bros. 3'' is a platform game developed and published by Nintendo for the Nintendo Entertainment System (NES). It was released for home consoles in Japan on October 23, 1988, in North America on February 12, 1990 and in Europe on ...
'', co-designer
Takashi Tezuka had the idea of putting his wife in the game. According to Miyamoto, "(Tezuka's) wife is very quiet normally, but one day she exploded, maddened by all the time he spent at work. In the game, there is now a character who shrinks when Mario looks at it, but when Mario turns away, it will grow large and menacing".
Boos appear as white, spherical, levitating
ghosts, similar to the
will-o'-the-wisp
In folklore, a will-o'-the-wisp, will-o'-wisp or ''ignis fatuus'' (, plural ''ignes fatui''), is an atmospheric ghost light seen by travellers at night, especially over bogs, swamps or marshes. The phenomenon is known in English folk belief, ...
phenomenon or the Japanese
Hitodama. They have faces featuring large
fangs and long
tongue
The tongue is a muscular organ in the mouth of a typical tetrapod. It manipulates food for mastication and swallowing as part of the digestive process, and is the primary organ of taste. The tongue's upper surface (dorsum) is covered by taste bu ...
s, and three short extremities which resemble two arms and a tail. Being ghosts, Boos often appear in
haunted house
A haunted house, spook house or ghost house in ghostlore is a house or other building often perceived as being inhabited by disembodied spirits of the deceased who may have been former residents or were otherwise connected with the prope ...
-themed levels in the games, in which they'll "sneak up" on the player, much in the fashion of ghosts of popular culture. Their presence can be recognized by their signature
cackle. They are generally depicted as
bashful and
mischievous in nature.
Appearances
''Mario'' series
Boos first appeared as "Boo Diddleys" (a pun on the name of American musician
Bo Diddley
Ellas McDaniel (born Ellas Otha Bates; December 30, 1928 – June 2, 2008), known professionally as Bo Diddley, was an American guitarist who played a key role in the transition from the blues to rock and roll. He influenced many artists, incl ...
) in 1988's ''
Super Mario Bros. 3
''Super Mario Bros. 3'' is a platform game developed and published by Nintendo for the Nintendo Entertainment System (NES). It was released for home consoles in Japan on October 23, 1988, in North America on February 12, 1990 and in Europe on ...
'' for the
NES, appearing in the more difficult
fortress
A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ...
levels in which they pester
Mario
is a character created by Japanese video game designer Shigeru Miyamoto. He is the title character of the '' Mario'' franchise and the mascot of Japanese video game company Nintendo. Mario has appeared in over 200 video games since his c ...
or
Luigi
is a fictional character featured in video games and related media released by Nintendo. Created by Japanese video game designer Shigeru Miyamoto, Luigi is portrayed as the younger fraternal twin brother and sidekick of Mario, Nintendo's mas ...
by sneaking up on them. Since their first appearance, apart from their names being shortened simply to "Boos", their design or habits have not changed significantly, despite their appearances in most games since ''Super Mario Bros. 3.'' They have, however, spawned a number of subspecies over the years, with the first being the "Stretch" that also debuted ''Super Mario Bros. 3''. Stretches are essentially Boos that are attached to platforms that will pop up to Mario or Luigi should they attempt to step on it.
Boos played a much more prominent role in ''
Super Mario World
''Super Mario World,'' known in Japan as is a platform game, platform video game developed and published by Nintendo for the Super Nintendo Entertainment System (SNES). It was released in Japan in 1990, North America in 1991 and Europe and A ...
'', in which they were the starring enemies in the game's many
Ghost House
A haunted house, spook house or ghost house in ghostlore is a house or other building often perceived as being inhabited by disembodied spirits of the deceased who may have been former residents or were otherwise connected with the prope ...
levels. In these levels, Boos would attack in groups and in a number of creative attack patterns, such as flying in wide circles in order to create obstacles for the player, or
swarming
Swarm behaviour, or swarming, is a collective behaviour exhibited by entities, particularly animals, of similar size which aggregate together, perhaps milling about the same spot or perhaps moving ''en masse'' or migrating in some direction. ...
in order to increase their attack radius. ''Super Mario World'' also introduced the "Fishin' Boo", a ghostly version of a
Lakitu, as well as the secret
boss "Big Boo", a larger and stronger Boo who would return as a boss throughout the series and even gain a subspecies of the same name. ''Super Mario World'' was also the first game to reveal that some Boos were able to transform into blocks, which, if lured into a suitable position, can be used to reach otherwise unreachable platforms. This trait later reappeared in ''
Yoshi's Story'' of the ''
Yoshi
Yoshi is a fictional dinosaur who appears in video games published by Nintendo. Yoshi debuted in ''Super Mario World'' (1990) on the Super Nintendo Entertainment System as Mario and Luigi's sidekick. Yoshi is the title character of the List of Y ...
'' series and ''
Super Mario Sunshine''.
In ''
Super Mario 64'', an entire course was designed around the Boo character, titled "Big Boo's Haunt". In this game - unlike most preceding it - Boos could actually be killed by attacking them, by using moves such as a punch or ground pound. Staying true to the gameplay mechanic of previous games featuring Boo, if Mario looks away from Boo, it will attempt to move closer and attack Mario. However, if Mario retains eye contact with Boo, it will become translucent and impervious to attack.
In the
2001
The September 11 attacks against the United States by Al-Qaeda, which killed 2,977 people and instigated the global war on terror, were a defining event of 2001. The United States led a multi-national coalition in an invasion of Afghanistan ...
GameCube
The is a home video game console developed and released by Nintendo in Japan on September 14, 2001, in North America on November 18, 2001, and in PAL territories in 2002. It is the successor to the Nintendo 64 (1996), and predecessor of the W ...
launch title, ''
Luigi's Mansion
is a 2001 action-adventure game developed and published by Nintendo. The game was a launch game, launch title for the GameCube and was the first game in the ''Mario (franchise), Mario'' franchise to be released for the console; it was released ...
'', the Boos were given the role of primary villains, alongside other miscellaneous ghosts of the mansion. The game's primary antagonist is
King Boo, their king who leads the Boos of the mansion and who is responsible for trapping
Mario
is a character created by Japanese video game designer Shigeru Miyamoto. He is the title character of the '' Mario'' franchise and the mascot of Japanese video game company Nintendo. Mario has appeared in over 200 video games since his c ...
inside a
portrait
A portrait is a painting, photograph, sculpture, or other artistic representation of a person, in which the face and its expressions are predominant. The intent is to display the likeness, personality, and even the mood of the person. For this ...
. It was this game that established Luigi's
fear of ghosts - particularly Boos - which would become a defining aspect of his timid and somewhat cowardly personality. To continue this theme, Boos began to target Luigi in future games, with King Boo in particular becoming Luigi's archenemy. For instance, they locked Luigi away in ''
Super Mario 64 DS
''Super Mario 64 DS'' is a 2004 platform game developed and published by Nintendo for the Nintendo DS. It was a launch game for the DS. ''Super Mario 64 DS'' is a remake of the 1996 Nintendo 64 game ''Super Mario 64,'' with new graphics, charact ...
'' and trapped Luigi in a haunted mansion in ''
Super Mario Galaxy
is a 2007 platform game developed and published by Nintendo for the Wii. It is the third 3D game in the ''Super Mario'' series. As Mario, the player embarks on a quest to rescue Princess Peach, save the universe from Bowser, and collect ...
''. King Boo and his minions once again play a prominent role in
its sequels.
In ''
Super Mario Galaxy
is a 2007 platform game developed and published by Nintendo for the Wii. It is the third 3D game in the ''Super Mario'' series. As Mario, the player embarks on a quest to rescue Princess Peach, save the universe from Bowser, and collect ...
''
and ''
Super Mario Galaxy 2
is a 2010 platform video game developed and published by Nintendo for the Wii. It was first announced at E3 2009 and is the sequel to 2007's ''Super Mario Galaxy''. It was released worldwide in 2010. Much like the first game, the story fol ...
'', Mario and Luigi are able to transform into Boos themselves, through the use of the "Boo Mushroom" (a version of the series' famous
Super Mushroom). In this form, the player is able to levitate and pass through certain walls, and being able to understand the Boos' language, "Booish".
Boos also make frequent appearances in the ''Mario'' spin-off games, sometimes as enemies or as part of the scenery, but sometimes as playable characters, the first instance of this being a playable Boo in ''
Mario Tennis'' for the
Nintendo 64
The (N64) is a home video game console developed by Nintendo. The successor to the Super Nintendo Entertainment System, it was released on June 23, 1996, in Japan, on September 29, 1996, in North America, and on March 1, 1997, in Europe and ...
. Starting in ''
Mario Kart 64'', Boos have appeared as items in some of the ''
Mario Kart
is a series of racing games developed and published by Nintendo. Players compete in go-kart races while using various power-up items. It features characters and courses from the ''Mario'' series as well as other gaming franchises such as ...
'' games,
in which their purpose is to steal items from other racers and turn its user
invisible
Invisibility is the state of an object that cannot be seen. An object in this state is said to be ''invisible'' (literally, "not visible"). The phenomenon is studied by physics and perceptual psychology.
Since objects can be seen by light in ...
for a short time. King Boo appeared as a playable racer in ''
Mario Kart: Double Dash'', ''
Mario Kart Wii
is a kart racing game developed and published by Nintendo for the Wii. It is the sixth installment in the ''Mario Kart'' series, and was released in April 2008. Like its previous installments, ''Mario Kart Wii'' incorporates playable characters ...
'', ''
Mario Kart 8 Deluxe'', and ''
Mario Kart Tour''. Boos reappear in ''
Super Mario 3D Land
is a platform video game in the ''Super Mario'' series developed and published by Nintendo for their Nintendo 3DS handheld game console. It was released worldwide in November 2011, beginning in Japan. It was the first ''Mario'' game to be r ...
'' and ''
New Super Mario Bros. 2'', the latter of which introduces a new subspecies called the "Boohemoth".
The first appearance of a friendly Paper Boo who fought on Paper Mario's side was
Lady Bow from the first ''
Paper Mario
''Paper Mario'' is a video game series and part of the ''Mario'' franchise, developed by Intelligent Systems and produced by Nintendo. It combines elements from the role-playing, action-adventure, and puzzle genres. Players control a pap ...
'' game. Since then, later games, particularly the ''Paper Mario'' series (especially ''
Mario & Luigi: Paper Jam''), have presented other Paper Boos in a friendly and more positive light.
Since the release of ''
Mario Party: Star Rush'', a Boo ''
amiibo'' figure (which glows in the dark) was released.
''Yoshi'' series
Being the sister series of the ''Mario'' games, Boos also appear in similar roles throughout the ''
Yoshi
Yoshi is a fictional dinosaur who appears in video games published by Nintendo. Yoshi debuted in ''Super Mario World'' (1990) on the Super Nintendo Entertainment System as Mario and Luigi's sidekick. Yoshi is the title character of the List of Y ...
'' series, making their first appearance in the
1991
File:1991 Events Collage.png, From left, clockwise: Boris Yeltsin, elected as Russia's first president, waves the new flag of Russia after the 1991 Soviet coup d'état attempt, orchestrated by Soviet hardliners; Mount Pinatubo erupts in the ...
puzzle game
A puzzle is a game, problem, or toy that tests a person's ingenuity or knowledge. In a puzzle, the solver is expected to put pieces together ( or take them apart) in a logical way, in order to arrive at the correct or fun solution of the puzzle ...
, ''
Yoshi
Yoshi is a fictional dinosaur who appears in video games published by Nintendo. Yoshi debuted in ''Super Mario World'' (1990) on the Super Nintendo Entertainment System as Mario and Luigi's sidekick. Yoshi is the title character of the List of Y ...
'' (known as ''Yoshi's Egg'' in Japan and as ''Mario & Yoshi'' in Europe and Australia), in which they appeared alongside
Goomba
Goombas , known in Japan as , are a fictional mushroom-like species from Nintendo's Mario (franchise), ''Mario'' franchise. They first appeared in the Nintendo Entertainment System, NES video game ''Super Mario Bros.'' as the first enemy playe ...
s, Piranha Plants and Bloopers as "blocks" which must be stacked in order to hatch a sizable
Yoshi
Yoshi is a fictional dinosaur who appears in video games published by Nintendo. Yoshi debuted in ''Super Mario World'' (1990) on the Super Nintendo Entertainment System as Mario and Luigi's sidekick. Yoshi is the title character of the List of Y ...
. They also appear as opponents in
1992
File:1992 Events Collage V1.png, From left, clockwise: Riots break out across Los Angeles, California after the police beating of Rodney King; El Al Flight 1862 crashes into a residential apartment building in Amsterdam after two of its engines ...
's ''
Yoshi's Cookie
''Yoshi's Cookie'' is a 1992 tile-matching puzzle video game developed by Tose and published by Nintendo for the NES and Game Boy platforms in 1992. A Super NES version was released the following year, developed and published by Bullet-Pro ...
'', as well as appearing as enemies in the
1993
File:1993 Events Collage.png, From left, clockwise: The Oslo I Accord is signed in an attempt to resolve the Israeli–Palestinian conflict; The Russian White House is shelled during the 1993 Russian constitutional crisis; Czechoslovakia is peace ...
first-person shooter
First-person shooter (FPS) is a sub-genre of shooter video games centered on gun and other weapon-based combat in a first-person perspective, with the player experiencing the action through the eyes of the protagonist and controlling the pl ...
''
Yoshi's Safari''.
Boos have also appeared in a number of forms in all of ''Yoshis main
platform game
A platform game (often simplified as platformer and sometimes called a jump 'n' run game) is a sub-genre of action game, action video games in which the core objective is to move the player character between points in an environment. Platform game ...
s, starting with ''
Super Mario World 2: Yoshi's Island'' in
1995
File:1995 Events Collage V2.png, From left, clockwise: O.J. Simpson is acquitted of the murders of Nicole Brown Simpson and Ronald Goldman from the year prior in "The Trial of the Century" in the United States; The Great Hanshin earthquake strike ...
, in which they appear as common enemies, as well as having a boss in the form of 'Bigger Boo'. In the ''Yoshi'' games, Boos mainly act in the same way as they do in the ''Mario'' games.
Other appearances
Outside of the games, Boos also appear in the ''
Super Mario-kun
The ''Mario'' media franchise extends out of video games into non-game media. Mario and themes related to the franchise have appeared in television shows, anime, films, comics and manga, merchandise, and musical performance.
Television
'' Sat ...
'' comics. They also make an appearance in ''
The Legend of Zelda: Link’s Awakening'', along with several other ''Mario'' characters. Boo also appeared in the compilation video game ''
Puzzle & Dragons Z + Super Mario Bros. Edition''.
Reception

With Boo being one of the more popular ''Mario'' enemies, their image has been used in official Nintendo merchandise, such as
plush doll
A stuffed toy is a toy doll with an outer fabric sewn from a textile and stuffed with flexible material. They are known by many names, such as plush toys, plushies, stuffed animals, and stuffies; in Britain and Australia, they may also be ...
s, as well as cookie cutters.
IGN's Audrey Drake listed Boo as one of the best enemies in the ''Mario'' series while
GameDaily ranked Boo seventh in a similar list, saying it is "unique" due to the fact that "Mario cannot kill with a
Fire Flower or using one of
his special suits." They also placed Boo fifth in a list of Nintendo characters that deserve their own games, calling it "Nintendo's favorite ghost". Boo was listed as the second best ghost in video game history by
Joystick Division. In a reader-based poll, it placed on top of best ghost characters in a Nintendo game, receiving four times as many votes as the
''Pac-Man'' ghosts; King Boo also featured on the same list, placing eighth. Boo was also incorporated into a winning Comic-Con costume in 2019, when a cel-shaded cosplay of
Mario
is a character created by Japanese video game designer Shigeru Miyamoto. He is the title character of the '' Mario'' franchise and the mascot of Japanese video game company Nintendo. Mario has appeared in over 200 video games since his c ...
took on a ''
Borderlands 3
''Borderlands 3'' is an action role-playing first-person shooter video game developed by Gearbox Software and published by 2K. It is a sequel to 2012's '' Borderlands 2'', and the fourth entry in the main ''Borderlands'' series. ''Borderland ...
'' style, with the figure of Boo with glowing eyes locked in a cage on the cosplayer's back.
Celeste Monsour of
geek culture
The word ''geek'' is a slang term originally used to describe eccentric or non-mainstream people; in current use, the word typically connotes an expert or enthusiast obsessed with a hobby or intellectual pursuit. In the past, it had a generall ...
website Fandomania published a list of ten of her favorite Boo-related
arts and crafts
A handicraft, sometimes more precisely expressed as artisanal handicraft or handmade, is any of a wide variety of types of work where useful and decorative objects are made completely by one’s hand or by using only simple, non-automated re ...
created by fans for
Halloween
Halloween or Hallowe'en (less commonly known as Allhalloween, All Hallows' Eve, or All Saints' Eve) is a celebration geography of Halloween, observed in many countries on 31 October, the eve of the Western Christian feast of All Saints' Day. ...
. The British ''
Official Nintendo Magazine
''Official Nintendo Magazine'', or ''ONM'', was a British video game magazine that ran from 2006 to 2014 that covered the Nintendo DS, Nintendo 3DS, Wii, and Wii U video game consoles released by Nintendo.
Originally published by EMAP as ...
'' included the Boo Mushroom in their "Top 20 ''Mario'' Power-ups", ranking it at fourteenth, stating that it's "ruddy mint".
Geekosystem also included the Boo Mushroom in their list of the "10 Greatest Mario Power-Ups", rating it 3rd in usefulness and 5th in whimsy, and 7th overall. ''
Game Informer
''Game Informer'' (''GI'', most often stylized ''gameinformer'' from the 2010s onward) is an American monthly video game magazine featuring articles, news, strategy, and reviews of video games and associated consoles. It debuted in August 1991 ...
'' editor Tim Turi listed Big Boo among the top 10 ghosts, calling all Boos "timid, invulnerable nuisances", but calling out the "huge, screen filling" Big Boo in particular because of the need to trampoline over it in ''Super Mario World''. In 2013,
ScrewAttack placed King Boo at number 2 in
top ten Ghosts in video game history.
Notes
References
External links
Booat Super Mario Wiki
{{Mario franchise
Ghost characters in video games
Mario (franchise) characters
Mario (franchise) enemies
Video game characters introduced in 1988
Video game species and races