Kid Buu

is the original, pure form of Majin Buu. Unlike his other forms, this form of Buu's thought process is seen to be irrational and spontaneous, even destroying his own body to destroy the Earth. Although he appears smaller than any other form, he is more dangerous than any other forms of Buu due to his full relentless evil and unpredictability. He is also completely free of restraint and has no trace of sanity and, because of this, is extremely volatile. He retains his childish personality, becoming amused and laughing hysterically at his own destruction of entire worlds. He is the main antagonist for the Kid Buu Saga, the final antagonist of the Majin Buu Saga, and the overall final antagonist of Dragon Ball Z.
After his death, Kid Buu reincarnated into , with Kid Buu hidden inside his being.Daizenshuu 7, 1996
==Appearance==
Kid Buu is almost identical in terms of appearance to that of Super Buu, with the exception that he is childlike in terms of stature and his antenna is also shorter than Super Buu's. In the manga, Kid Buu does not have any fingers besides the small index finger, but in the anime and in video games, he has the regular four fingers and a thumb. Just like the other Buus, he wears baggy white pants with a black belt showing the Majin symbol. Like Super Buu, he wears black arm covers and black boots with a similar yellow pattern ending in grayish brown shoes. 
==Personality==
Kid Buu's personality is very similar to that of a very young, spoiled, selfish child, in that he retains no form of compassion or remorse for any of his actions. Furthermore, due to his selfish and capricious personality and mindset, he is incapable of developing empathy and comprehending the nature of his actions. It can also be said that Kid Buu is very similar to that of a low-functioning sociopath. Kid Buu is also, like a child, very unpredictable in his behavior and actions, sometimes randomly falling asleep during battle or acting like a monkey by banging his chest with his fists.
Buu's only reason for existence was to cause absolute destruction. He enjoys the destruction he is capable of; reveling in any form of devastation he can wreak upon the universe. He appears to enjoy testing the limits of his own power as well, seeking out Vegeta and Goku just to see how far they could push him. He is also utterly merciless, annihilating entire planets simply because Vegeta and Goku were not there. On the rare occasion he ever showed any restraint of his power, it was either to make his "game" of destruction last longer instead of producing an instant kill or otherwise because he sensed even stronger targets to fight. He is not a sadistic killer seeking to bring pain to his victims, as he seemingly does not care, or even know about pain, nor does he seek to conquer and rule over anything. He merely seeks to have fun the only way he knows how; creating havoc and destruction in the whole universe, similar to the fat version of Buu before Mr. Satan told him to stop killing.
Though he is highly irrational and insane, Kid Buu does seem to have some reasoning abilities and intelligence, as he was shocked by Vegeta continuing to fight in spite of being battered around or when he quickly realized that Goku refused to hit him with the Super Spirit Bomb as long as Vegeta was in the way and took advantage of it by pinning the latter to the ground (although the latter bit was only in the anime). Though caring little for Bibidi, Kid Buu at the very least seemed to tolerate his presence presumably due to Bibidi summoning him and encouraging the destruction he caused as well as leading him to powerful opponents to test his power against such as the Supreme Kais, thus showing that Kid Buu can tolerate weaker beings if they prove useful to him, even though he has no real loyalty to Bibidi. 
In some video games, he is shown to get along with Janemba to the point they could be considered friends or at the very least allies as they both enjoy destruction and have similar personalities, even being able to fuse into their EX-Fusion Janembu. However, in Super Dragon Ball Heroes Demon God Buu is shown to have no problem with absorbing Xeno Janemba, though it is possible that his personality is influenced by his absorption of Demon God Xeno Dabura.
Out of all the forms of Buu, Kid Buu appears to be the least capable of speech, which Vegeta even commented on by sarcastically calling Kid Buu a "gifted speaker". After absorbing Demon God Xeno Dabura, he becomes capable of normal speech. In the manga, his only phrase is "You've had it!" during the battle against Goku and Vegeta, his other words being mostly gibberish. In the Funimation dub of the anime, Kid Buu's speech capacity is somewhat increased, as he says things such as "Buu squash you like bugs!", "Dum Dums!", "Me Buu, kill you!" and "Me Buu, not you!"
In Dragon Ball Legends, the evil within Innocent Buu falls under the influence of Zahha's Dark Ki after Innocent Buu is defeated by Super Saiyan 3 Shallot. DRK Evil Buu absorbs Good Buu to become DRK Super Buu who absorbs Ultimate Gohan and Piccolo to increase his strength and intelligence. Allying with the Mastermind's group, Super Buu becomes a thorn in Shallot's side for a good portion of the Tournament of Time. However eventually DRK Super Buu undergoes purification which leads to Ultimate Gohan and Piccolo being freed, while DRK Kid Buu emerges to confront Shallot himself. Interestingly, DRK Kid Buu is obsessed with defeating Shallot to the point he develops a habit of screaming Shallot's name not unlike Broly and Bio-Broly's habit of saying Kakarot!, though DRK Kid Buu mispronounces Shallot's name as either Sharrot, Sharot, or a variation on those pronunciations. It is unclear if this is due to the effects of the Dark Ki, Kid Buu's memories of Innocent Buu's defeat, and/or a combination of the two.
==Biography==
===Background===
Majin Buu was said to have been a creation of Bibidi.Dragon Ball Z episode 219, "Energy Drain"Dragon Ball Z: Kakarot, 2020 In Dragon Ball Daima however, it is revealed that Majin Buu was actually created by Marba at Bibidi's request.Dragon Ball Daima episode 8, "Tamagami" Prior to this revelation it was stated by Akira Toriyama that Buu has actually existed since time immemorial rather than having been created by Bibidi. Buu cycled between rampages and long hibernation. During numerous iterations of this cycle, he absorbed the evil elements of mankind, becoming steadily more violent and evil. The evil wizard Bibidi merely knew the means of calling Buu from out of his long slumber.
Long before the core events of Dragon Ball takes place, Majin Buu was summoned by Bibidi. This monster was a virtually invincible force of destruction, and, because of his absolutely wild and ruthless nature, he could not be controlled, even by Bibidi himself. An example of this is when Kid Buu blew up Planet Alpha and its inhabitants, and almost hit Bibidi in the process, causing Bibidi to tell Kid Buu off and only meekly telling him he is his "father" when Kid Buu intimidated him by glaring at him. Eventually, Buu and Bibidi made their way to the Sacred World of the Kai, where the rulers of the universe and Bibidi's sworn enemies, the Supreme Kais, lived peacefully. Majin Buu proceeded to kill both West Supreme Kai and North Supreme Kai before encountering South Supreme Kai, the strongest of the Kais. Although the Kai managed to fight more evenly with Buu than his cohorts had and landed a few hits on the monster, Buu managed to absorb South Supreme Kai during their fight, which transformed him into a bulkier version of himself.
thumb|left|Majin Buu after he absorbed the South Supreme Kai
Majin Buu then made an attempt on the life of Shin, but he was saved by Grand Supreme Kai, who inflicted immense damage on Buu, but was unable to kill him due to Buu's regeneration. Buu then absorbed him, resulting in the formation of the childlike fat Majin Buu. Due to the innocence of the Grand Supreme Kai's soul, this Buu was much less evil and wild than the original Buu. As Buu became calmer and easier to control,TV Anime Guide: Dragon Ball Z Son Goku Densetsu, 2003 seeing his opportunity, Bibidi finally managed to seal Majin Buu inside of a Sealed Ball without much resistance from the latter. Bibidi was then killed by Shin a short time later, which meant the madness of Majin Buu was believed to have ended for good.
However, the fat Majin Buu was again resurrected 5 million years later on Earth by Bibidi's doppelganger, Babidi. After a long chain of events (which includes the fat Majin Buu murdering Babidi, the fight between Good Buu and Evil Buu, the birth of Super Buu, and everyone that Super Buu had absorbed (Gotenks, Piccolo, Gohan, and the fat Buu) being removed by Goku and Vegeta (when they were voluntarily absorbed when they were Vegito), the original pure evil form of Majin Buu finally resurfaced.
Due to the destruction caused by Kid Buu, Majin Buu developed a fearsome reputation in Universe 7, enough that King Cold warned Frieza to never oppose Majin Buu.Dragon Ball Z: Resurrection ‘F’, 2015Dragon Ball Super episode 20, "A Warning from Jaco! Frieza and 1,000 Soldiers Close In"Dragon Ball Z: Resurrection ‘F’ chapter 1, "Chapter 1 (Resurrection ‘F’)"
===Dragon Ball Z===
====Majin Buu Saga====
After Vegeta removed Good Buu from Super Buu's head, Buu transformed back to his original self. After he came to his senses, Kid Buu attempted to destroy the Earth with a small yet incredibly powerful energy ball, but it was deflected by Vegeta's Final Burst Cannon. Kid Buu then created a massive energy ball and flung it towards the Earth. Goku and Vegeta realized that they would be unable to stop it and made an attempt to escape with Gohan, Goten, Trunks, and Piccolo. However, the only three that they were able to grab nearby were Mr. Satan, his dog Bee, and Dende. Kibito Kai appears and grabs onto Goku's hand (and grabbing on to Vegeta by his sleeveless jumpsuit) and teleports them away with Kai Kai while Gohan, Goten, Trunks, Piccolo, Yajirobe, Korin, Captain Ginyu, Tien Shinhan, and Chiaotzu are left on Earth, where it is then shortly and completely obliterated.
thumb|Kid Buu prepares an energy blast
Regenerating after the explosion, Kid Buu goes off in search of Goku and Vegeta, teleporting to many planets as he goes and destroying them upon sensing the Saiyans' absence. Along the way, in the anime, he finds the Grand Kai's Planet, where Pikkon and Olibu approach him and start taunting him, leading a number of dead warriors risking their existence against him including Krillin and Yamcha. After a victorious scuffle with Krillin, Kid Buu prepares to eliminate all the dead warriors once and for all. But before he can finish him and the other dead warriors, Kid Buu manages to sense the increasing combat powers of Goku and Vegeta and teleports off to the Sacred World of the Kai seeking strong opponents.Dragon Ball Z episode 278, "True Saiyans Fight Alone" Upon arriving, Kid Buu battles with Super Saiyan 2 Goku and Goku has the upper hand, although Kid Buu is not fighting at his maximum. Once he powers up, Goku transforms into Super Saiyan 3Dragon Ball Z episode 279, "Battle for the Universe Begins" (in the manga, he does this right away instead of fighting in the Super Saiyan 2 form in the anime)Dragon Ball chapter 509, "Battle for the Universe" and fights evenly with him.
Kid Buu, having the advantage of perpetual endurance,Goku states that Kid Buu's ki never descends (Dragon Ball chapter 316, "The Galaxy Strikes Back") wins over the battered Goku, who is quickly losing power from his draining Super Saiyan 3 transformation.Dragon Ball Z episode 280, "Vegeta's Respect" Vegeta transforms into his Super Saiyan 2 form to fight Kid Buu in an attempt to buy some time so Goku can charge to full power to finish Buu but is quickly defeated as well despite fighting well and lasting longer than expected.Dragon Ball Z episode 281, "Minute of Desperation" Mr. Satan then steps in and attempts to fight Buu but is severely outmatched and relies on mere luck to survive. Kid Buu moves in for the kill but finds himself unable to do so due to having the memories of Good Buu. His frustration ultimately leads him to spit out a small stone which explodes into an unconscious Good Buu. Now with nothing to stop him, Kid Buu resumes the play-fight with the enraged Mr. Satan, who attempts another pitiful attack when Good Buu steps in. Good Buu angrily tells Kid Buu to leave Mr. Satan alone and that his battle is with him. Kid Buu and Good Buu then engage one another in combat.Dragon Ball Z episode 282, "Old Buu Emerges" The battle quickly turns in Kid Buu's favor, and he ultimately dominates Good Buu, who however, refuses to give up the fight.
Meanwhile, Goku and Vegeta hatch a plan to have Dende and Kibito Kai use Porunga to restore the Earth and revive all the good people who were killed since the 25th World Martial Arts Tournament.Dragon Ball Z episode 283, "Earth Reborn" Goku then prepares to create a Super Spirit Bomb, while Vegeta uses King Kai's telepathy to ask for the Earthlings' help, to which only their friends and family respond.Dragon Ball Z episode 284, "Call to Action" Kid Buu and Good Buu continue their battle, until Good Buu is beaten so badly that he cannot fight any longer. Mr. Satan then steps in to stop Kid Buu, and Vegeta once again battles Kid Buu to buy some more time. Ultimately, Mr. Satan manages to convince the people of Earth to give up their energy and the Super Spirit Bomb reaches completion, frightening Kid Buu.Dragon Ball Z episode 285, "People of Earth Unite" Unfortunately, Kid Buu holds the battered Vegeta 'hostage', keeping him in the Spirit Bomb's path as well, therefore stopping Goku from throwing the attack. However, Good Buu wakes up and smashes himself headfirst into Kid Buu, knocking him off Vegeta for Mr. Satan to carry off to safety. Unable to get Good Buu off of him, Kid Buu angrily blasts him away with a massive energy sphere.
Now with an obstacle-free path, Goku takes his chance and throws the Spirit Bomb straight at Kid Buu, but Kid Buu is able to stop it and slowly pushes it back towards the exhausted Goku. Dende then uses the third wish with the Namekian Dragon to have all of Goku's strength be restored. Goku then turns Super Saiyan and overpowers Kid Buu with the Spirit Bomb, causing Majin Buu to be obliterated and thus vanquished forever. Shortly before Kid Buu's destruction, Goku openly hopes that one day Kid Buu will return as a good person so that they may have a rematch.Dragon Ball Z episode 286, "Spirit Bomb Triumphant" In the Other World, King Yemma hears Goku's request and makes it come true by having Kid Buu reincarnated as an Earthling named Uub.Dragon Ball Z episode 290 , "Buu's Reincarnation" In order to settle things for good with Good Buu, Goku wishes to erase all the Earthlings' memories of Majin Buu. Mr. Satan also gives Good Buu strict orders to refrain from getting angry, no matter what.Dragon Ball Z episode 287, "Celebrations with Majin Buu"
===Dragon Ball Super===
====God of Destruction Beerus Saga====
In the manga, while image training in his family's radish field, Goku pictures Kid Buu as the third opponent he faces (after Final Form Frieza and Perfect Cell). When Goku was ready to "attack" Kid Buu, his thoughts are interrupted by a shout from Goten, who was distracted by his father and almost fell down a ravine with the tractor.Dragon Ball Super chapter 1, "God of Destruction's Premonition"
In the anime, Kid Buu makes a cameo appearance.Dragon Ball Super episode 1, "A Peacetime Reward Who Gets the 100,000,000 Zeni?!"
====Golden Frieza Saga====
Sorbet mentions Goku's defeat of Majin Buu to Frieza to express how strong Goku has become since he fought Frieza on Namek. Frieza, remembering his father's warning to never oppose Majin Buu, realizes how strong Goku has become, causing him to decide to train himself instead of rushing off to confront Goku as he originally planned. This shows that Frieza is aware of how dangerous Majin Buu is compared to himself and realizing how dangerous Goku has become to have defeated such a foe.
====Galactic Patrol Prisoner Saga====
Kid Buu is mentioned by Merus when he's telling the story of how Kid Buu absorbed Grand Supreme Kai and became Innocent Buu. Dragon Ball Super chapter 43, "Joining the Galactic Patrol!" Later on, it is revealed by Good Buu and the Grand Supreme Kai Buu, through a flashback when Good Buu and Kid Buu split, that Kid Buu kept the majority of Grand Supreme Kai's remaining godly power.Dragon Ball Super chapter 49, "Outer Space Battle" When reincarnated as Uub, it is revealed that Uub inherited all of that Godly power that Kid Buu kept but was unable to use.Dragon Ball Super chapter 66, "Moro, Consumer of Worlds"
===Dragon Ball GT===
====Baby Saga====
Kid Buu makes a cameo appearance in a retelling by Good Buu of Uub's origin before he was born, right before Good Buu and Uub fuse to create Majuub.Dragon Ball GT episode 32, "The Return of Uub"
====Shadow Dragons Saga====
Kid Buu is being defeated by the Super Spirit Bomb in one of Goku's flashbacks.Dragon Ball GT episode 64, "Until We Meet Again"
==Super Dragon Ball Heroes==
===Prison Planet Saga===
In the manga, Kid Buu is one of the Ghost Warriors summoned by Hatchiyack. He engages in combat with Super Saiyan Future Trunks alongside Turles and Lord Slug. Future Trunks bisects Kid Buu, but he reforms immediately thanks to his nature as a Ghost Warrior.Super Dragon Ball Heroes: Universe Mission!! chapter 4, "Kaio-ken vs. Oozaru"
===Supreme Kai of Time Saga===
An incarnation of Kid Buu appears as an intruder in Aeos' Super Space-Time Tournament. When the tournament begins, he stares down Janemba, both ready for combat. They appear to fight an even battle before Kid Buu knees Janemba in the face, before Janemba retaliates with a powerful headbutt.Super Dragon Ball Heroes episode 42, "Fierce Battle in the Super Space-Time Tournament! The Warriors in Black Strike!"
===Demon Invader Saga===
In one particular Space-Time, Kid Buu is absorbed by Majin Ozotto.Super Dragon Ball Heroes: Meteor Mission! chapter 11, "All-Out Battle"
==Film Appearances==
===Battle of Gods===
Kid Buu appears in the prologue that recaps his destruction from the Super Spirit Bomb used by Super Saiyan Goku.
===Broly===
Kid Buu makes a cameo appearance in a flashback, when Goku mentions to Broly how a lot has happened on Earth.
==Other Dragon Ball Stories==
===Dragon Ball SD===
Kid Buu appears in chapter 4 of Dragon Ball SD. Majin Buu turns into Kid Buu after becoming friends with Mr. Satan. Unlike the original manga/anime, Majin Buu skips Super Buu and goes straight into Kid Buu. Like in the original manga/anime, Kid Buu is killed by a Spirit Bomb.
===Kakarot===
Prior to Kid Buu reincarnating as Uub, Goku has Fortuneteller Baba bring Buu back for a day so that he can train against him.
===Shin Budokai===
While they are traveling through Hell in order to find and defeat Janemba, the heroes Vegeta, Pikkon, and Shin encounter Kid Buu, whose evil part remained in Hell while his cleaned soul became Uub. Vegeta decides to hold off Buu for as long as possible so that the others can keep going, but Buu did not let them leave, forcing Pikkon to fight him. After defeating Pikkon, Buu notices that Super Janemba has arrived. Janemba wishes to absorb Buu, so Buu decides to fight Janemba and their fight is so ferocious that Hell itself starts to crumble. Soon, Super Janemba starts to gain the upper hand.
In order to stop the fight, Goku and Vegeta fuse into Gogeta and attack Janemba, but Buu stops them, not wanting anyone to interfere. Janemba creates a fake Vegito to fight Gogeta. After Gogeta defeats Vegito, Super Janemba absorbs both the fake Vegito and Buu in order to drastically increase his power. Despite this, he is defeated and things are restored to normal, leaving Super Janemba defeated, and Buu stuck in Hell with the other villains.Shin Budokai - Another Road confirms that the "Fusion Dance" ending is the non what-if scenario
===Online and Xenoverse series===
As their progenitor, Kid Buu still exists throughout the Majin subspecies that was started by Mr. Buu, and as such these Majin are capable of taking on the Pure Majin form - becoming identical to Kid Buu in every manner (save for skin color and voice), though some Majin are able to retain their "hearts" allowing them to retain their original personality and transform into their pure state at will without turning into another evil incarnation of Kid Buu. In Xenoverse 2, Good Buu reveals the transformation is dangerous for Majins as it could lead to them losing their "heart", essentially becoming another evil incarnation of Kid Buu.
In Xenoverse, Demon God Demigra uses Dark Magic to turn Dark Super Buu into Dark Kid Buu causing him to destroy the Earth, though fortunately Goku, Vegeta, Dende, Mr. Satan, and the Future Warrior escape. Dende flees with the Supreme Kais while Goku, Good Buu, Vegeta, and the Future Warrior hold off Dark Kid Buu. Goku tries to destroy the Villainous Mode empowered Kid Buu with the Super Spirit Bomb, but Demigra's magic allows Dark Kid Buu to overpower it until the Future Warrior adds their energy to the Super Spirit Bomb creating the Tandem Super Spirit Bomb and assists Super Saiyan Goku in giving the attack one final push that destroys Dark Kid Buu. However later in Age 778, Demigra alters history by having his mirage revive Frieza, Cell, and Kid Buu with the Dragon Balls. Demigra possesses them using Villainous Mode granting Kid Buu the final stage Villainous Mode transformation along with Frieza and Cell. However, the Future Warrior defeats them with help from Saiyan beyond God Goku and they are killed once again.
In Xenoverse 2, Towa uses her new Supervillain spell to turn Kid Buu into Kid Buu•Supervillain though with help from the new Future Warrior, Goku completes the Super Spirit Bomb and finishes off Kid Buu like in the original history.
Due to the destructive actions committed by Kid Buu, Super Buu, and Innocent Buu, in Xenoverse 2, Majin Buu and by extension the Majin species are considered to be an ancient race of legendary demons according to those that have heard of Majin Buu or the Majin such as Lord Slug, Hit, Beerus, and Whis. Cooler reveals that like his brother he was also warned by their father never to cross Majin Buu or Beerus showing that King Cold warned both his sons against opposing either of these two legendary figures. However, Beerus himself claims that he himself is more ancient than the ancient Majin implying he (and by extension Champa) were born before the original Majin Buu.
===FighterZ===
At some point Kid Buu's cells (or Good Buu's cells which contain Kid Buu's genetic information) were collected by Dr. Gero's Supercomputer which survived in one of his many laboratories. These cells along with cells of countless fighters and brilliant researchers were incorporated into a new type of android, Android 21 who became the de facto leader of the Red Ribbon Army. Though Android 21 possessed a normally gentle and good-natured personality, the cells of Majin Buu unfortunately caused her to develop an evil split personality along with a destructive, insatiable hunger.
This evil personality used Dr. Gero's labs and technology to create an army of mindless clones, including ones of Kid Buu. However, while the other clones were little more than mindless drones, the Kid Buu clones retained the original Kid Buu's personality and traits, due to the unique nature of his cells. As a result, these clones were especially dangerous as they could absorb other clones to increase their power.
Additionally in the Enemy Warrior Arc, the villains lead by Frieza and Cell joined forces with the Z Fighters and began targeting 21's clone food supply as a way to prevent her from growing any stronger and to force a confrontation with her. Their plan succeeded causing her to seek revenge on Frieza and his allies, leading to her defeat and death due to the combined attack from Goku, Cell, and Frieza. In the Android 21 Arc, 21's good side manages to suppress her hunger and joins forces with the soul linked to Android 18, 18 herself, 17, and 16 in defeating the clones while fighting off her evil side's desire to feed. After Android 16's death result in Android 21's fission, the good Android 21, 18, and 17 join the Z Fighters in hunting down the remaining clones in the hopes of luring out the evil 21 who had absorbed the original Cell. Ultimately all the clones are destroyed. In honor of her sacrifice, Goku decides to ask King Yemma to reincarnate Android 21's soul as he had previously done by reincarnating Kid Buu into Uub.
It is strongly implied by the behavior of the Kid Buu clones, that there is an unruly aspect to Kid Buu's cells which causes both the clones’ unique behavior and Android 21's destructive impulses. Thus, both can be seen as being the result of the genetic legacy of Kid Buu which not even the science of Dr. Gero and his supercomputer could control.
In addition to appearing in FighterZ, Clone Kid Buus appear as random enemies in the story event DRAGON BALL FighterZ: Super Warrior Arc in Dokkan Battle playing a similar role as they do in FighterZ as they are random enemies that drop more Zeni and EXP when defeated.
===Dokkan Battle===
;Plot of Darkness - Resurrection
The dimensional distortion that Future Trunks and the Time Patrol are investigating causes Kid Buu's history to be altered resulting in him not absorbing South Supreme Kai and Grand Supreme Kai. Instead, Kid Buu ends up being sealed away inside the Sealed Ball. Additionally, these alterations cause Babidi and Dabura to begin the Majin Buu conflict early causing it to occur before Gohan reaches adolescence. Grand Supreme Kai recruits the Dragon Team and the Time Patrol to deal with Babidi before Majin Buu can be resurrected. However, their attempts fail, and Kid Buu is freed. Dabura questions if he is really the legendary Majin Buu though Babidi notes only Grand Supreme Kai can confirm it which he does.
After fighting Kid Buu, Goku thinks he can defeat him, and Grand Supreme Kai notes its possible but warns his allies not to underestimate Kid Buu. Suddenly Kid Buu absorbs Grand Supreme Kai transforming into a slightly weaker Innocent Buu due to only Grand Supreme Kai begin absorbed.
===World Mission===
One of the SDBH game world anomalies created by "the menace" leads to the game world Kid Buu being sealed inside the Sealed Ball instead of Innocent Buu in the 5 Million Before Age. Like in the original history, the game world Organization of Babidi seeks to revive Majin Buu though the anomalies result in them teaming up with Hoi to gather Kili for Majin Buu's resurrection in exchange for helping Hoi free the sealed halves of Hirudegarn within Tapion and Minotia but fortunately the Time Patrol's Dragon Ball Heroes team works with the brothers to slay the phantom beast, though the Organization of Babidi manages to get away with Kili Spopovich and Yamu stole from Great Saiyaman 3 bring the Ultimate Majin's revival closer to fruition.
;Chapter 3, Sub Chapter 1 - "Great Saiyaman 4"
The Organization of Babidi launches a second attack on Hero Town, with Babidi brainwashing Kabra with Manipulation Sorcery having him hunt down and eliminate SDBH players to prevent the Heroes from gathering more allies and to gather the remaining energy he requires to free Majin Buu. After Dabura, Spopovich, and Yamu are defeated, the Majin Hero of Destruction Kabra confronts the Heroes, but is defeated weakening the brainwashing, leading to Babidi finally showing himself.
;4-Star Boss Mission - "Enter Majin Buu!"
Babidi complains he hadn't had such a hard time controlling someone since Prince of Destruction Vegeta, as he reveals the Heroes are too late as he had gathered enough energy to release Majin Buu.
Great Saiyaman 3 and the Heroes are stunned to see Kid Buu instead of Innocent Buu, with Great Saiyaman 4 calls Kid Buu the "worst version" of Majin Buu while Note concludes it is once more due to an anomaly, while Great Saiyaman 3 notes the irony that their energy led to the revival of Kid Buu. Babidi orders Kid Buu to attack them but he ignores Babidi, who is forced to threaten to seal him back up in an attempt to get him to cooperate, which works as Kid Buu elects not to call his bluff, preferring to be free to rampage and attacks the Heroes. Great Saiyaman 3 tells his team to work together to defeat Buu. With their combined power, Great Saiyaman 4, Note, Froze, and Kagyu manage to completely obliterate the Ultimate Majin Kid Buu, to Babidi's utter shock as Great Saiyaman 4 takes the opportunity to kill Babidi to free Kabra completely and put an end to the wizard's schemes and the threat posed by the game world Kid Buu.
;The Monster Behind "the menace"
Eventually it is revealed that "the menace" is actually Sealas, a former member of the Galactic Patrol who was the first Time Patroller recruited by Chronoa. However, Sealas had an uncompromising sense of justice which made it hard for him to accept the darker aspects of history. Things ultimately come to a head during what became Sealas' final mission patrolling history with Chronoa. During said mission, they came to a planet being attacked by historical Ultimate Majin Kid Buu while on patrol and Sealas noticed a boy being attacked by the evil Majin. However, Chronoa tells him that Kid Buu's attack on the planet is part of the official history thus they must allow things to play out, however Sealas cannot stand by and see an innocent die, causing him to shield the boy from Kid Buu's attack. Back at the Time Nest, Chronoa admonishes him for altering history telling him that doing so could dramatically alter history and would go against what the Time Patrol stands for as its primary job is to protect history including darker moments in history such as the deaths of her fellow Supreme Kai, West Supreme Kai and North Supreme Kai, as well as Kid Buu's absorption of South Supreme Kai and Grand Supreme Kai. However, Chronoa understands Sealas' intentions while misguided were noble and gives him time to cool off. Sealas decides to check the Scroll of Eternity to learn more about the boy's fate, only to discover to his horror that despite his interference, the boy perished along with his entire world which was one of the many worlds that Kid Buu destroyed historically some point between Time Immemorial and being summoned by Bibidi in 5 Million Before Age. Due to his failure to prevent the boy and his unnamed planet's destruction and his own inability to accept living in a universe he considers "unjust", Sealas concludes he must eradicate evil and the current history itself by burning the Scroll of Eternity to forge a new one that free of evil. This leads to Sealas going rogue and attempting to burn the Scroll of Eternity, but it is foiled by Chronoa who discovers his plans and sentences him to imprisonment within the Time Abyss for his betrayal. However Sealas refuses to give up believing Chronoa and the Time Patrol to be villains for opposing his plans and eventually grows strong enough to create a Wormhole to escape his confinement and in addition to the anomalies creates his loyal robotic servant Ahms to absorb the data of various fighters in order to gain enough power to destroy the Scroll of Eternity allowing him to rewrite history as he saw fit, thus the real world Kid Buu's existence inadvertently lead to Sealas' betrayal of the Time Patrol and later opposition towards Chronoa and the Dragon Ball Heroes team.
;Android 21 Saga - Activation
In the Arcade Mode Universe Mission Age "Android 21 Saga: Activation", Clone Buus appears as an enemy on the Frieza Path 5-Star Boss Mission "Defeat Clone Frieza and his allies!" where he fights on Clone Frieza's team alongside a Clone Cell. Though he is not among the clones whose data can be added to the Capture Log, Beat can still use a Super Hero Robo Capture Module on him to create a Clone Buu Summon Module, allowing him to temporarily summon a Clone Buu VR Card to use in battle.
===What-if scenarios===
;Shin Budokai
In the "Potara Fusion" ending, using the Potara earrings (which Kibito Kai had Shenron repair), Goku and Vegeta use this to fuse back into Vegito in order to defeat Janemba and Buu before going to train in the Hyperbolic Time Chamber.
==Power==
;Manga and Anime
In the past, Kid Buu was able to fight the South Supreme Kai but resorted to absorbing him. As the huge Majin Buu he fought the Grand Supreme Kai, and in the end chose to absorb him as well. In the anime flashback of Kibito Kai, Kid Buu is also shown to have destroyed an entire Galaxy over an unspecified period of time.
Buu's power changes depending on who he absorbs. According to Goku and Vegeta, his power spikes up when he changes from normal Super Buu to the huge Buu but goes back down when he reverts back to Kid Buu; though Goku and Vegeta underestimate him due to his size. Later, Kibito Kai commented that, while on Earth in this state, Kid Buu is more dangerous than ever not because of his power, but due to his uncontrollable nature.
Furthermore, his sheer insanity makes him impossible to reason with, which, while difficult, was possible to accomplish with Super Buu. While Innocent Buu and Super Buu made time for small talk during combat, Kid Buu relents his assault only to taunt his opponents when they are down. His power and dangerous behavior is witnessed when he destroys entire planets for no reason and without showing any signs of remorse. Kid Buu's strongest attack - the Planet Burst - is in the anime said to be capable of destroying the Earth ten times over, which makes it so powerful that Goku notes that even he and Vegeta together would not be able to stop it. While he is incredibly powerful Kid Buu never keeps his guard up, which allows his body to be blasted apart by beings weaker than himself, as shown by how Super Saiyan 2 Vegeta was able to blow his body apart with a barrage of ki blasts.
Kid Buu displays almost infinite stamina. Shortly after his planet-busting rampage, he battles Super Saiyan 3 Goku, Super Saiyan 2 Vegeta and the Good Buu one after another and manages to outlast them all without showing any obvious signs of fatigue. This is also applied to his healing abilities, as Kid Buu seems to recover at an unlimited rate, making him nigh unstoppable unless destroyed completely.
As seen in his fight, Kid Buu's raw power is roughly equal to that of Super Saiyan 3 Goku, matching him blow for blow. Though Goku claims that he could beat Kid Buu when fighting in his Super Saiyan 3 form at 100% power, he could not maintain his full power due to the form's ki consumption and thus is unable to take down Kid Buu using the form. In the anime, he even states that his attacks have stopped having any effect on Kid Buu towards the end of their battle and that Kid Buu is stronger than he could have ever imagined. In the anime, Goku also states that, as Kid Buu, his speed and power are "on a whole other level compared to any other Buu".Kid Buu is strongest in the anime
Also in the anime, when Cell witnesses Goku and Kid Buu's battle from Hell, he concludes that Buu is giving Goku a far harder fight than Cell himself had. His power was so great that he even managed to push back the Super Spirit Bomb which had the power of the entire Earths population, people from the Otherworld, Namekians, Kibito Kai, Old Kai, and Dende. It was only with the help of the Namekian Dragon Balls that restored Goku to full power in his Super Saiyan form that he was able to push it back with his own power combined with the Super Spirit Bomb. It is said by Goku that had they not managed to stop Kid Buu during the battle on the Sacred World of the Kai, everyone would have been killed by him.
In Dragon Ball Super manga, when Goku went to find 17 in the Universe Survival Saga, he talked to Dende who (in relation to Uub) referred to the evil Majin Buu as the most formidable opponent Goku had ever faced.
In the Galactic Patrol Prisoner Saga it is revealed that Kid Buu retained most of the Grand Supreme Kai's god power after splitting Good Buu from himself.
;Super Dragon Ball Heroes
In the Supreme Kai of Time Saga, Kid Buu is shown to be able to fight evenly with Janemba.
;Statements by guidebooks and authors
The Daizenshuu explicitly portrays Kid Buu as weaker than the huge Buu, stating that it's only after he absorbed the Grand Supreme Kai's gentle soul that he was tamed and his power was dampened."He killed the North and West Kaioshin, absorbed the South Kaioshin, and then, when he took in the gentle heart of the Dai Kaioshin, his ferociousness and power were somewhat weakened." (Daizenshuu 7)
The anime-related Dragon Book Z Vol. 7 states that he is the Buu with the greatest power.Kid Buu Dragon Book
Compared to the other forms of Majin Buu, Kid Buu is the most violent but not so strong, and Gotenks and Gohan would have been able to defeat him.El Manga Legendario
In an interview, Toriyama noted that he made Frieza and Majin Buu in their final transformations to be the strongest to go against people's expectations.Toriyama interview
;Video Games
In Super Dragon Ball Heroes: World Mission, the anomalous game world Kid Buu is completely obliterated by the combined might of Great Saiyaman 4, Note, Froze, and Kagyu.
In Dragon Ball Legends, in Chronoa's flashback of Sealas' final mission as a Time Patroller, Sealas is shown to be strong enough to shield an innocent child from being attacked without taking any damage, indicating that Sealas was stronger than Kid Buu (who was from a unspecified point in history in between Time Immemorial and his summoning by Bibidi in 5 Million Before Age) was at the time. However, despite Sealas' intervention, Kid Buu manages to unintentionally restore the original history by destroying the planet of the boy Sealas had saved which resulted in the boy's own death, thus rending Sealas alteration of history meaningless.
==Abilities==
<tabber widths="400">
|-|Techniques=
Techniques
*Flight – The ability to fly with the use of ki.
*Ki Sense – The ability to sense Ki. Kid Buu was demonstrated to use this when he sensed Goku and Vegeta powering up and warped to their location on the Sacred World of the Kai (which the two Saiyans deliberately allowed for specifically to lure him there).
*Ki Blast – The most basic form of energy wave. Although a basic attack, when used by Kid Buu it still had enough power to destroy a planet the size of the Earth.
*Unknown, unfathomable power – Buu possess an odd ki signature that makes it hard to tell how strong Buu really is. Whether Buu's power level is incredible, or not that much is unknown even by Majin Buu.Tori interview
*Paralyzing Gaze – Buu narrows his eyes and stares at his foe, and due to his raw power, the foe is rendered almost completely immobile. Only works on foes who are much weaker than he is.
*Survivability - Like Frieza, Cell, and the other iterations of Majin Buu, Kid Buu has the ability to survive anywhere, in any condition without sustenance, even the most horrifying injuries. Combined with his regeneration, Kid Buu's survivability makes him extremely difficult to kill.
**Oxygen Independence - Like Frieza and Cell, Kid Buu does not need to breathe oxygen, thus he can survive in the vacuum of space or other oxygen-less environments. 
*Body Manipulation – An ability that allows the user to freely manipulate his/her own body structure.
**Regeneration – The ability to regrow certain body parts or cells that have been dismembered or destroyed and replace them with brand new cells, or simply regrouping all of their separated parts back together.
**Mystic Attack – A technique that allows the user to extend their arms to great lengths.
**Absorption –The technique involves either engulfing a victim completely or using a part of their body to suck the victim into their body, thus gaining their power and abilities.
**Mystic Ball Attack – The user curls himself up in a ball, and launches himself at his opponent, knocking them away. Then, he flies away and charges back to knock into the opponent several times. Finally, the user flies high up into the air and charges downward to knock the opponent into the ground, inflicting a great deal of damage.
**Arm Detachment Attack - Buu tears off one of his arms, changes it into a ball, and then with a scream of "Hyaah!" sends it flying towards the opponent at super-speed, where it begins to attack them. Able to operate his severed body part at will, he uses this unusual attack to inflict large damage on his opponent before they have time to dodge.
*Mimicry – The coveted ability to copy another fighter's technique after seeing it used only once. In Dragon Ball Online, it is implied that this ability was inherited by Good Buu's Majin descendants allowing them to instantly learn techniques such as the Kaio-ken.
*Kamehameha – A powerful Ki blast fired with two hands after concentrating a large amount of Ki.
**Majin Kamehameha – Buu's version of the Kamehameha.
**Super Kamehameha – an advanced and more powerful version of the Kamehameha. Unlike his regular Kamehameha, it is blue in color.
*Electric Shock – Kid Buu creates electricity on his body and then channels it through his arms to shock his opponent. Used in combination with the Mystic Attack to torture Vegeta.
*Mystic Combination – A rush attack he used against Super Saiyan 3 Goku. Named in the Budokai Tenkaichi series.
*Kai Kai – A technique that allows its user to instantly teleport to another planet, place or person. Unlike Instant Transmission, the user does not actually need to focus on a specific energy signature to use as a target. This means that the user can transport anywhere within and even outside the universe. In the anime, this technique is called "Instant Transmission". It is one of his Blast 1 in the Budokai Tenkaichi series.
*Finger Beam – The user holds out their index finger and releases an energy beam from their fingertip.
*Calamity Blaster – A simple pink, perfectly round beam (it looks like a sphere when looking straight down it) fired from the palm of the hand. It can be fired very easily with no charge up or special stance.
*Ill Flash – First, Buu opens his mouth and charges a pink energy sphere with additional streaks of black and pink electricity. Then, he fires the energy sphere from his mouth in the form of a narrow, pink energy wave at the opponent, inflicting a high amount of damage.
*Antenna Beam – A bolt of electricity fired from the antennae. The attack shocks its victims, stunning them.
*Mad Kill Spike – A combination of many energy waves, much more powerful than the average ki blasts, and fired at a very rapid rate. Kid Buu has his own unique version during which he splits into hundreds of Kid Buus that fire Continuous Energy Bullet, creating a monsoon of energy waves. Named in the Budokai series, where Kid Buu uses Continuous Energy Bullets without splitting.
*Nightmare Impact – First, Kid Buu front kicks the opponent in their stomach. Then, he roundhouse punches the opponent and punches them again in their stomach. Finally, Kid Buu puts his hand over the opponent's face and blasts them away with a pink energy wave, inflicting a huge amount of damage.
*Pearl Flash – An attack used by Kid Buu against Good Buu in which he surrounds himself in energy and rushes forward like a rocket. This attack vaporized Good Buu's neck and up, but he regenerated.
*Planet Burst – First, Kid Buu raises one hand in the air and gathers his energy in the form of a giant, bright-pink energy sphere. Once it is ready, he launches the energy sphere at the opponent, inflicting a huge amount of damage.
**Shocking Ball – Kid Buu charges a large pink energy sphere by raising his hand. As electricity begins to surround the sphere, Kid Buu throws the sphere at his opponent, causing an incredible amount of damage.
*Sleep – A basic biological function of most living beings.
*Drumming - A supportive technique where Kid Buu pounds his chest. DBL17-06S Buu: Kid's Special Quirk Skill Arts in Dragon Ball Legends.
*Cloning – The general ability to split into several identical duplicates to fight as a group.
*Double Blast – A barrage of ki blasts used to torture Goku when he was unable to throw the Spirit Bomb since Kid Buu was holding Vegeta hostage. Named in the Dragon Ball Z Collectible Card Game.
*Massacre of the Billions and Millions of Bountiful Mini Bitty Maliciously Baneful Majin Buus – Kid Buu splits into many Kid Buus and they all fire energy waves. Used against Goku, and later Vegeta. Named in the Dragon Ball Z Collectible Card Game.
*Elastic Tentacle – Buu simply extends his head tentacle and uses it to whip or constrict the opponent.
*Assault Rain – A technique originally used by Super Buu. Kid Buu was first shown using this attack in the opening for Dragon Ball GT: Final Bout and Budokai Tenkaichi. He also uses it in the video games Final Bout, Dragon Ball Z: Shin Budokai, Dragon Ball Z: Shin Budokai - Another Road, Dragon Ball Z: Infinite World, and Dragon Ball FighterZ.
*Crazy Smash – Kid Buu kicks the opponent up in the air, then he kicks and punches them down again, and finally Kid Buu kicks his opponent in the back when he is down. Used in the Budokai series.
*Warp Kamehameha – Used in the Budokai series.
*Savage Rush – A High Speed Rush finished with a Kiai. Used in the Budokai series.
*Vanishing Drop – Kid Buu kicks the opponent up and grabs them in mid-air to perform a spinning piledriver. Used in the Budokai series.
*Unnamed Black Orb technique – An unnamed technique which Kid Buu uses in the opening of Budokai Tenkaichi, Kid Buu raises his arm into the air, shooting multiple beams which hit Cell, the Cell Jrs., Piccolo, Ultimate Gohan, and Frieza, and then Kid Buu create a massive black orb and charges at the opponent. Goku defeats him with a Kamehameha, breaking through the orb.
*Super Ghost Kamikaze Attack – Used in Dragon Ball Z: Scouter Battle Taikan Kamehameha - Ora to Omee to Scouter.
*Mystic Shoot - Kid Buu's signature attack in the Raging Blast series.
*Mighty Powerful God Shockwave – Used by Buu (w/ Southern Supreme Kai absorbed) in Dragon Ball Heroes, Super Dragon Ball Heroes: World Mission, and as his Super Attack in Dokkan Battle.
*Ultimate Heavenly Cannon – Used by Buu (w/ Kibito Kai absorbed) in Dragon Ball Heroes and World Mission.
*Demon Eye – Used by Buu (w/ Babidi absorbed) in Dragon Ball Heroes and World Mission.
*Teleporting Vanishing Ball - Kid Buu creates a medium sized Planet Burst in front of himself with both hands, then uses an unspecified teleportation technique (it is unclear if it is Kai Kai or Instant Transmission) to appear near the opponent and throws the Planet Burst all at them.
*Baked Sphere – A dark explosive wave utilized by Villainous Mode Kid Buu.
*Fake Shot - A technique where Buu thrusts his leg through the ground then has his foot erupt from the ground to kick the opponent. Named in Dragon Ball Fusions where it appears as one of Kid Buu's Special Moves. In the Xenoverse series, if performed in the air or on an opponent in the air the Buu will create portals which the thrusts his leg through instead of the ground.
**Trick Shot - A stronger version of Fake Shot which can be learned as a Special Move by Kid Buu in Dragon Ball Fusions.
***Mystic Shot - An even stronger version of Fake Shot that is stronger than Trick Shot which Kid Buu can learn at level 15 in Dragon Ball Fusions.
**Destruction Blaster - A Ultimate Move Arts where Kid Buu performs Fake Shot, stomping his foot causing his foot to erupt from several portals kicking the opponent several times, before he charges an energy sphere in his right hand before firing an energy wave at the opponent. If it can KO the final opponent, a Legendary Finish is triggered causing Kid Buu to follow up the energy wave with a large Planet Burst which he uses to blow up himself, the opponent and the stage, though Kid Buu survives due to his ability to regenerate. Used by DBL32-02S Legends Limited Buu: Kid in Dragon Ball Legends.
*Transfiguration Beam – Kid Buu uses this attack to turn opponents into a gumball and chew them before spitting them out in FighterZ.
|-|Forms and Transformations=
Forms and Transformations
;Pure Majin
Kid Buu's natural form where he (originally) does not possess the traits or abilities of any of those he has absorbed.
After absorbing the Grand Supreme Kai, and then eventually returning to his Pure Majin form millions of years later, Kid Buu retained most of the Grand Supreme Kai's god power despite not having his physical traits or innocent nature, though he could not access this power at will.
In Dragon Ball Online, the Majin descendants of Mr. Buu and Miss Buu had weakened over the course of several generations and can only transform into their Pure Majin forms after a wish from Shenron. When a Majin takes their Pure Majin form, their dormant power that was lost over the generations is released and they become much stronger as the gain the form of the progenitor of their race, Kid Buu. 
According to Good Buu in Xenoverse 2, there is a risk that a Majin will lose their "heart" (original personality) when trying to acquire their Purification form naturally which would result in them becoming another evil incarnation of Kid Buu.
In Dragon Ball Legends, Kid Buu's Pure Majin form is known as Buu: Kid.
;South Supreme Kai absorbed
A form seen briefly in a few panels of the manga and an anime flashback, and which is referred to by Old Kai as .Dragon Ball chapter 508, "The Boo of Pure Evil" Kid Buu absorbs South Supreme Kai, creating a taller and incredibly muscular version of the creature. In addition, Buu's antenna also grows significantly larger. In this form his voice also changes from the previously high-pitched voice Kid Buu had, though he still does not talk much (apart from yells and grunts similar to Kid Buu). After a second absorption of the plump and good-natured Grand Supreme Kai, Buu gains the deceptively harmless and childlike form first seen in the series. It is stated that Huge Buu is stronger than Super Buu (without any absorptions), as when he was transforming into this form, Goku notes that his ki was increasing and, in the anime, expressed concern when Huge Buu seemed to grow a lot stronger until his size and power quickly dropped as he transformed into Kid Buu.
Super Buu's biography in the first Dragon Ball Z: Budokai Tenkaichi identifies the form as the one taken by the original Majin Buu after absorbing the South Supreme Kai as the Super Buu form, though after everyone is freed from inside him, Super Buu does take a similar appearance just before he fully transforms into Kid Buu. When Kid Buu charges energy or uses specific combos in Dragon Ball GT: Final Bout, he buffs up into a form similar to the form he took when he absorbed the South Supreme Kai. The form is playable in Dragon Ball Heroes and Dokkan Battle.
In Dragon Ball Heroes it is simply called 
;Innocent Buu
Daizenshuu 4, 1995 is the form the Huge Majin Buu takes after absorbing Grand Supreme Kai, which results in the childlike fat Majin Buu; who is somewhat weaker, and much less evil than Kid Buu due to the innocence of the Grand Supreme Kai. In this form, Buu becomes calmer and easier to control. This is the form Bibidi sealed Majin Buu inside of a cocoon, and the form in which Buu is resurrected by Babidi after many chains of events. He loves to eat and has childlike innocence but becomes near unstoppable when angry. He eventually fissions into Good Buu and Evil Buu.
;Super Buu
, also called , is the result of Evil Buu absorbing Good Buu. He is essentially the same entity as Innocent Buu, but with Buu's true evil persona having dominance over Grand Supreme Kai's innocence, but he retains his intelligence gained from the Grand Supreme Kai. He is also more powerful than Innocent Buu was, but not as powerful as the Huge Majin Buu. In the series, Super Buu absorbs several Z Fighters and gains their power and abilities. Due to absorbing several Z Fighters, Super Buu changes his appearance, such as when Super Buu absorbs both Gotenks and Piccolo, he wears Gotenks' vest until his strength defuses, and he transforms, and wears Piccolo's cloak plus the upper clothes which is pointed sideways. Also, when he absorbs Gohan, he wears his gi and dark blue undershirt which is similar to that of Goku.
;Uub
Uub is the good, reincarnated version of Kid Buu.Dragon Ball volume 27, "The Quiet, Fierce Battle", pages 224-225 Right when Goku defeated Kid Buu with the Super Spirit Bomb, he told Kid Buu that he hoped that he would come back someday as a better person, so that they could fight again. King Yemma overheard Goku's desire and had Kid Buu reincarnated into a Human form named Uub. Goku fights him at the World Martial Arts Tournament ten years later. Goku then takes him away to train with him so that Goku would have an apprentice who could protect the Earth.
Uub possesses the evil Majin Buu hidden inside his being and is able to tap into his power; though at the time of his debut, he could not control it.
Later, in the anime continuation Dragon Ball GT, Uub has seemingly fully learned how to tap into Kid Buu's power, and later on fuses with Good Buu in order to obtain a new more powerful form referred to as .
;Kibito Kai absorbed
The form Buu takes after absorbing Kibito Kai. It appears in Dragon Ball Heroes since the third mission of the Jaaku Mission series (JM3). While in this state Kid Buu's clothes are replaced with Kibito Kai's, and he gains the ability to use Kibito Kai's most powerful attack: the Ultimate Heavenly Cannon. 
This form is also playable in World Mission.
;Babidi absorbed
The form Buu takes after absorbing Babidi. The form is seen in Dragon Ball Heroes. It is playable in the latter game since the fifth mission of Jaaku Mission series (JM5). This absorption gives Buu increased magical abilities, including the ability to use Demon Eye.
The form is also playable in World Mission.
;Villainous Mode
After being revived in Age 778 by Demigra in Xenoverse, Kid Buu is possessed and gains this Dark Magic transformation which acts as the final stage for Villainous Mode. Kid Buu gains a dark purple aura, glowing red eyes, and black markings around his eyes. This form is playable in Xenoverse, while in Xenoverse 2 it appears as a random unplayable enemy in certain Expert Missions.
;Supervillain
This form is the result of Towa's Dark Magic spell which shaves off life to grant greater power. In Xenoverse 2, Kid Buu obtains this form during the final battle of the Majin Buu conflict. In this form, Kid Buu's skin becomes a pale metallic color, his eyes glow pink, and he gains a glowing Time Breaker symbol on his forehead. He also emits a black & white aura. This form is playable in Xenoverse 2 under the name Kid Buu•Supervillain.
;Dark Ki
DRK Buu: Kid is the result of his previous incarnation DRK Buu: Super having been created through DRK Majin Buu: Evil absorbing Good Buu. Like Buu: Super, DRK Buu: Kid can utilize 3rd Stage Dark Ki which causes nearby terrain to become warped and color inverted.
|-|Fissions=
Fissions
;Good Buu
Once Innocent Buu expels Evil Buu, he becomes pure good but loses most of his power. The fat Majin Buu, who is now named , or ,Dragon Ball chapter 518, "10 Years After" has a brief fight with Evil Buu in which he is greatly outclassed and ultimately absorbed through ingestion, allowing Evil Buu to become Super Buu. Though he is weak compared to Evil Buu and Kid Buu, his power is still immense compared to most other characters in the series as demonstrated by his ability to actually hold his own in a fight with Kid Buu. Once he is absorbed, all of the Kai's influence goes into his being, allowing Super Buu to be uninhibited by any form of good, with the exception of Good Buu's memories of Mr. Satan and Bee, which stops Super Buu from attacking them on multiple occasions.
After re-fusing into Super Buu, Good Buu basically represents all the power gained by Kid Buu through the absorption of the Supreme Kais. Once this power is removed from Super Buu, he transforms back into Kid Buu. During the battle with Kid Buu, the Majin spits out Good Buu to stop any good influence from being in his body. Later, after Kid Buu is defeated, Good Buu is called Mr. Buu by the main cast (excepting one notable instance in the Nekomajin manga, where he still refers to himself as "Majin Buu" while he was on a walk from Satan City); although Buu is the same as the fat Buu on the outside, he is noticeably different on the inside. He no longer widens his eyes in fits of anger. All the evil tendencies seen in Innocent Buu are gone and he is now pure good.
;Evil Buu
This form represents all of the evil inside Buu. Unlike the other forms Evil Buu is very skinny also his whole body is gray in color, unlike the other forms of Buu which are pink. Because he took most of the power during the fission, the evil Buu's power outmatched the Good Buu and managed to absorb him after a brief battle and form Super Buu.
;Miss Buu
This fission was created by Good Buu after reading the adult book Bob & Margaret which caused Buu to long for love and resulted in him creating the first female Majin, Miss Buu via fission using ideas on females he obtained Bob & Margaret. Miss Buu takes the form of a slender, blue-skinned female Majin.
Unlike Evil Buu, Miss Buu was good natured like Mr. Buu and the two eventually became husband and wife. Wanting children like Earthling couples had, Miss Buu and Mr. Buu used Bob & Margaret to gain ideas resulting in the development of the Love-Love Beam technique which led to the birth of their first child, Baby Buu. Eventually their family grew resulting in the beginnings of the Majin race on Earth. Though she was created after Kid Buu's defeat, her and Majin Buu's descendant carry within them Kid Buu's dormant power which though diluted over time can still be accessed by their descendants via the Pure Majin form.
|-|Fusions=
Fusions
;Janembu
The EX-Fusion of Super Janemba and Kid Buu introduced as a boss and playable character in Dragon Ball Fusions. Also appears in Dragon Ball Z: Dokkan Battle. 
</tabber>
==Appearances==
===Manga===
===Anime===
==Appearances in Other Media==
===Dr. Slump remake===
In the 1997 remake of Dr. Slump, Kid Buu appears from Senbei Norimaki's Reality Machine fighting Goku due to Arale Norimaki putting the last volume of the Dragon Ball manga, "Goodbye, Dragon World", into it. His appearance is white and black due to him being created from the manga.
===Video Game Appearances===
*Dragon Ball Z: Hyper Dimension
*Dragon Ball Z: The Legend
*Dragon Ball GT: Final Bout
*Dragon Ball Z: Legendary Super Warriors
*Dragon Ball Z: Budokai 2
*Dragon Ball Z: Buu's Fury
*Dragon Ball Z: Budokai 3
*Dragon Ball Z: Budokai Tenkaichi
*Dragon Ball Z: Shin Budokai
*Dragon Ball Z: Budokai Tenkaichi 2
*Dragon Ball Z TV game
*Dragon Ball Z: Battle Taikan Kamehameha - Omee to Fusion
*Dragon Ball Z: Battle Taikan Kamehameha 2 - Ossu Omee Gokū Tenkaichi Budōkai
*Dragon Ball Z: Scouter Battle Taikan Kamehameha - Ora to Omee to Scouter
*Jump Ultimate Stars
*Dragon Ball Z: Bakuretsu Impact
*Dragon Ball Z: Shin Budokai - Another Road
*Dragon Ball Z: Budokai Tenkaichi 3
*Dragon Ball Z: W Bakuretsu Impact
*Dragon Ball Z: Infinite World
*Dragon Ball Z: Dragon Battlers
*Dragon Ball: Raging Blast
*Dragon Ball Z: Tenkaichi Tag Team
*Dragon Ball: Raging Blast 2
*Dragon Ball Online
*Dragon Ball: Zenkai Battle
*Dragon Ball Heroes
*Dragon Ball Kai: Ultimate Butōden
*Dragon Ball: Zenkai Battle
*Dragon Ball Z: Ultimate Tenkaichi
*Dragon Ball Z For Kinect
*Dragon Ball Z: Battle of Z
*Dragon Ball: Ultimate Swipe
*Dragon Ball Xenoverse
*Dragon Ball Z: Extreme Butōden
*Dragon Ball Z: Dokkan Battle
*Dragon Ball Xenoverse 2
*Dragon Ball Fusions
*Dragon Ball Legends
*Dragon Ball FighterZ
*Super Dragon Ball Heroes: World Mission
*Dragon Ball Z: Kakarot
*Dragon Ball: The Breakers
*Dragon Ball: Sparking! Zero
==Voice Actors==
*Japanese: Kōzō Shioya
*English:
**Animaze dub: Kevin Seymour †
**Ocean Group dubs: Brian Dobson
**Funimation dub: Josh Martin
*Portuguese:
**European Portuguese dub: Joaquim Monchique
**Brazilian Portuguese dub: Wellington Lima
*Italian dub: Riccardo Rovatti 
*Spanish:
**Latin American Spanish dub: Mario Sauret (DBZ), Marcos Patiño (DBZ Kai)
**Castilian Spanish dub: Daniel Palacios
*Catalan dub: Antoni Forteza
*Greek dub: Yiannis Papaioannou
*Hungarian dub: Levente Kárpáti
*Hebrew dub: Shay Zornitzer
*Thai dub: Kaiwan Wattanakrai (Monderine TV dub), Thanakrit Janklongtham (DEX dub)
*Cantonese dub: Chiu Sai-Liang
*French dub: Patrick Borg (DBZ), Antoine Nouel (DBZ Kai)
*Mandarin dub: Yang Kaikai
==Battles==
;Pre-Dragon Ball
*Kid Buu vs. Alpha-seijin 
*Kid Buu vs. West Supreme Kai 
*Kid Buu vs. North Supreme Kai 
*Kid Buu vs. South Supreme Kai
*Kid Buu (South Supreme Kai absorbed) vs. Shin 
*Kid Buu (South Supreme Kai absorbed) vs. Grand Supreme Kai
;Dragon Ball Z
*Kid Buu vs. Pikkon and Olibu 
*Kid Buu vs. Krillin 
*Kid Buu vs. Krillin and Yamcha 
*Kid Buu vs. Goku (Super Saiyan 2/Super Saiyan 3)
*Kid Buu vs. Vegeta 
*Kid Buu vs. Goku (Base/Super Saiyan 3)
*Kid Buu vs. Vegeta (Super Saiyan 2)
*Kid Buu vs. Mr. Satan
*Kid Buu vs. Good Buu
*Kid Buu vs. Good Buu and Mr. Satan
*Kid Buu vs. Good Buu
*Kid Buu vs. Vegeta
*Kid Buu vs. Good Buu 
*Kid Buu vs. Goku (Base/Super Saiyan)
;Dragon Ball Super
;Manga
*Kid Buu, Cell (Perfect Form), and Frieza (Final Form) vs. Goku (Super Saiyan)
;Super Dragon Ball Heroes
;Manga
*Kid Buu (Ghost Warrior), Turles (Ghost Warrior), Lord Slug (Ghost Warrior), Bojack (Ghost Warrior), and Cell (Perfect; Ghost Warrior) vs. Future Trunks (Super Saiyan) and Cooler (Fourth Transformation/Golden)
;Anime
*Kid Buu vs. Janemba
==List of characters killed by Kid Buu==
;Pre-Dragon Ball
*Alpha-seijin - Many were killed easily by Kid Buu, and the rest of them were killed when he blew up Planet Alpha.
*West Supreme Kai - Killed when Kid Buu blasted her in the back.
*North Supreme Kai - Killed by Kid Buu's Vanishing Beam.
;Dragon Ball Z
*Gohan - Killed when Kid Buu blew up Earth.
*Goten - Killed when Kid Buu blew up Earth.
*Trunks - Killed when Kid Buu blew up Earth.
*Piccolo - Killed when Kid Buu blew up Earth.
*Tien Shinhan - Killed when Kid Buu blew up Earth.
*Chiaotzu - Killed when Kid Buu blew up Earth.
*Korin - Killed when Kid Buu blew up Earth.
*Yajirobe - Killed when Kid Buu blew up Earth.
*Captain Ginyu - Killed when Kid Buu blew up Earth.
*Cell Jr. - Killed when Kid Buu blew up Earth.
*Many extraterrestrials - Killed when Kid Buu blew up a number of planets after destroying Earth and regenerating.
;Video Games
*Unseen Boy and the entire population of his planet - Killed by Kid Buu during one of his historical rampages. Sealas attempted to save the boy while patrolling history with Chronoa, though despite his intervention the boy died as he was supposed to historically.
==Trivia==
*In the manga, Kid Buu does not have any fingers besides the small index finger, but, in the anime and video games, he has the regular four fingers and a thumb.
*Kid Buu and Frieza are the only villains seen destroying planets by hitting the planet's core. They are also the only villains to have directly destroyed the Earth, though Frieza's destruction of the Earth was undone by Whis' Temporal Do-Over while the Earth was later restored using the Namekian Dragon Balls.
*Kid Buu is the only villain in the original manga that Goku actually defeated (and killed) by using the Spirit Bomb.
*Kid Buu's enlarging his fist to giant size to attack Vegeta is similar to Luffy's Gear Third from One Piece. This isn't surprising the manga's creator Eiichiro Oda is a noted Dragon Ball fan.
*It is revealed that King Cold knew about Kid Buu as he warned Frieza never to fight with God of Destruction Beerus or Majin Buu. Additionally, Frieza was shocked upon learning Goku had killed the legendary Majin which made him realize how powerful Goku had become, though Frieza's training and acquisition of Golden Frieza allowed him to ultimately surpass Kid Buu.
**In Dragon Ball Xenoverse 2, Cooler reveals he too was warned by his father to never oppose Beerus or Majin Buu indicating confronting either of them was taboo among the Frieza Clan.
*In Super Janemba's ending in the arcade mode of Shin Budokai - Another Road, Super Janemba and Kid Buu are shown to be able to understand each other's words, and they even become friends.
**In Xenoverse 2, Kid Buu and Janemba also become partners in the parallel timeline featured in Parallel Quest 57: "Hell is a Picture?" where they end up turning hell into their playground, only to be confronted by Gogeta and the Future Warrior.
**In Dragon Ball Fusions, after Janemba is defeated by Tekka's Team, he transforms into Super Janemba and performs EX-Fusion with Kid Buu creating their EX-Fusion Janembu.
*In Xenoverse 2, it is revealed by Good Buu when he offers to train the Majin Future Warrior to help them unlock their Pure Majin form, he warns them that there is a risk they may lose their "heart" if they try to achieve it which if it occurred would cause them to effectively turn into another incarnation of Kid Buu. However, the Future Warrior manages to retain their heart allowing them to transform into their Pure Majin form at will while maintaining their personality and sanity.
*In Shin Budokai - Another Road, as a joke, the World Tournament Announcer understands all of the sounds Kid Buu makes as words, which surprises and confuses Vegeta and Goku.
*In the Mandarin and FUNimation dub, both Super Buu and Kid Buu are voiced by two different people whereas in almost every other dub the voice actor remains the same.
*In some of the fan-subbed Dragon Ball Z episodes from the 90's, Kid Buu is referred to as Pure Evil Boo, even though the only Majin who is pure evil is Evil Buu.
*In Dragon Ball GT, when Kid Buu makes a cameo appearance, his eyes are white despite them being red originally.
*In the original Japanese version, Kid Buu only says one word while fighting Good Buu being "die!".
*In World Mission, Chronoa's flashback shows Kid Buu invading a planet during one of his many rampages during the period of history between Time Immemorial and 5 Million Before Age making it the first time said period history was actually depicted on-screen in any media.
**Ironically, Kid Buu ends up unintentionally fixing a minor alteration to history caused by the Time Patroller Sealas who had defied Chronoa to save a boy from being attacked by the Pure Majin. This makes Kid Buu the only known villain to have corrected history altered by a member of the Time Patrol.
*In the European version of Dragon Ball Z: Budokai 2, if the player chooses the French language in the options, Majin Buu (Pure) is erroneously named "Uub".
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pt-br:Kid Boo
el:Μικρός Μπου
ca:Buu Petit
sq:Kid Buu
fr:Majin Boo originel
es:Boo Puro
de:Majin Boo
tr:Çocuk Buu