Majin Buu

Majin Buu Majin Buu, later known as Mr. Buu ,Misutā Bū; lit. "Mister Boo"),[8]is the first form of Buu seen in the Dragonball series. Majin Buu takes many forms, all of which are linked below, and all of the forms are simply referred to as "Majin Buu" in the series, but the various forms get their common names from various Dragon Ball Z video games. According to Daizenshuu 1, Majin Buu was inspired by Akira Toriyama's third editor, Fuyuto Takeda.

Name
Buu's along with Bibidi and Babidi names are most likely references to the magic words the fairy godmother uses in the 1950 film Cinderella, "Bibbidi-Bobbidi-Boo." In Japanese, Majin Buu is roughly translated to mean chief magical being.

Personality
Although he is one of the most powerful entities in Dragon Ball Z, Majin Buu is often playful and displays his childish personality, revealing he destroys things for fun simply from old instructions from his master, stopping once told what he was doing was wrong thanks to the Grand Supreme Kai's personality showing in him. Though he is playful and silly, his evil side is readily apparent, especially shown when his eyes widen, and steam shoots out of the holes on his body. His extreme anger issues show themselves often, when he is even slightly made fun of, or starts to lose in a battle. He finds enjoyment in taking the lives of many and shows no remorse, though this is because he treats everything as a game. In battle, he fights in a bullying manner, using his immense size to outflank his opponent. Once he was absorbed by Evil Buu, his playful and childish traits manifest in Super Buu and Kid Buu respectively. During his second battle against Gotenks, Gotenks was preparing the Super Ghosts of his Super Ghost Kamikaze Attack For battle. Piccolo showed Gotenks that Buu had already regenerated from the last Super Ghost attack. Super Buu was also lying on his stomach, drinking a soda (though it looked like a milkshake) and reading a magazine, much to Gotenks' fury and embarrassment. Also, when Goku and Vegeta were preparing for battle, Kid Buu was sleeping (as Buu only needs so little time to rest), much to Goku's surprise. More importantly, due to his connection with Hercule he had influence to stop him from killing the former as Super Buu and later Kid Buu. For this reason, he also responded to Videl's request to be patient due to being Hercule's daughter; though it wasn't enough to stop him from killing her. While mildly annoying to Super Buu, it infuriated Kid Buu enough that he spat him out as soon as he was able to.

Despite the pleasure he takes in mass-murder, it is later revealed that he only committed such acts because he was unaware of the moral implications of his actions, and because he had been commanded to do so by Babidi, and Bibidi before him. The Grand Supreme Kai's presence is more influential in this form than in Super Buu, who is mostly evil and is influenced very little by the Kai. He literally struggles with the evil inside himself, with the evil winning and usurping near complete control, Majin Buu becoming far more dangerous as a result.

Buu also possesses an enormous appetite for sweets, shown to far exceed even Goku's eating habits, as Buu was still hungry after he once turned a whole city of people into candy and ate them. Majin Buu only has to sleep for about five seconds to get the results humans get from hours of slumber. He is extremely naive, as he was completely ignorant of Mr. Satan's (inept) attempts to kill him.

Pre-Dragon Ball
The fat version of Majin Buu is the result of Ultra Buu's absorption of Grand Supreme Kai, the supreme ruler of all Kais. The merging of the juvenile and immature Kid Buu with the benevolent and innocent Grand Supreme Kai resulted in a childlike carefree being who, despite his behavior, possesses power that far surpasses that of a Super Saiyan 2. Of note, absorbing Grand Supreme Kai granted Majin Buu the ability to speak fluently, although he usually refers to himself in the third person. Buu became calmer and easier to control after absorbing the Grand Supreme Kai,[13] and Bibidi then decided to steal him in a Sealed Ball.

Dragon Ball Z
Majin Buu is first introduced during the Babidi Saga and is the first form of Majin Buu that is seen in the series. He was released from his Sealed Ball by Babidi's son, Babidi, thanks to all the energy Majin Vegeta and Goku were giving off while fighting. Despite Babidi's involvement in freeing him, Buu for the most part ignored him, although he quickly accepted him as his master when Babidi makes an implied threat of sealing Buu back into the Sealed Ball. In addition, he gets angered at Dabura's claims of him being a "bumbling idiot", and proceeds to humiliate him in battle. He has a brief battle with the Supreme Kai and Gohan in which he easily defeats both of them with little to no effort. He is then confronted by Vegeta who proves to be his first true challenge. He puts up a good fight, managing to cause a noticeable amount of damage to Buu, which causes Buu to realize that to beat Vegeta, he will have to be serious and so, uses Angry Explosion, which severely damages Vegeta. Vegeta is ultimately beaten by the monstrous Buu, despite landing a monstrous amount of damage to Buu, which Buu merely regenerated from. Despite Trunks' attempts to convince his father that by fighting together, they will win, Vegeta knocks out Trunks and Goten, deciding to sacrifice himself in order to defeat Majin Buu for good. He blows himself and Buu to pieces. Later, Piccolo returns to the aftermath of the explosion, and Buu reveals his regeneration technique's virtually limitless capabilities and comes back to life before healing Babidi (although only after Babidi again threatens him with sealing him back into the Sealed Ball if he does not, as he was ignoring him again), who Piccolo had attempted to kill earlier. Together, he and Babidi go on rampage throughout Earth searching for Goten, Trunks, and Piccolo for their individual parts in almost ruining Babidi's plan.

Goku's challenge
Their rampage is later interrupted by Goku, who intends to halt Majin Buu from destroying West City, as Trunks needs to find the Dragon Radar there. Goku uses his time by showing Majin Buu the Super Saiyan transformations. First, Super Saiyan 1, Super Saiyan 2, and then decides to finally reveal the latest form: Super Saiyan 3 transformation, much to the shock of Babidi and surprise of Buu. As Goku manages to overpower Buu when they start their fight, Majin Buu still treats the battle as playing, healing every wound Goku gives him. Goku and Buu both manage to land decent attacks on each other, as Buu uses attacks he has learned from other Z Fighters, including Vegeta. Buu even learns the Kamehameha technique after watching Goku use it only once. As Buu and Goku continue their enormous struggle, Goku fires an attack towards Buu, but Buu manages to deflect it back to the nearby city, completely destroying it. Throughout the fight, whenever Goku manages to get the upper hand on Buu, either by throwing him into the city or evading one of his attacks, Babidi gives Buu a harsh scolding, calling him insulting names. Buu eventually orders Babidi to be quiet, and Goku realizes that despite obeying Babidi's orders, Buu completely hates his master. Goku halts their fight after Trunks successfully finds the Dragon Radar. When Buu asks Goku to fight again, Goku informs Buu that in two days there will be another strong fighter to face Buu and give him a challenge. Majin Buu remembers this throughout his transformations and awaits this fight. Before he leaves, Goku asks why Majin Buu takes orders from Babidi, considering their enormous difference in strength and power. Right after Goku leaves, Babidi insults Buu for not finishing him off, calling him names, which pushes Buu over the edge. Majin Buu turns on Babidi, strangles him to ensure that Babidi does not cast Sealing Spell on him, and murders him by punching off his head. After this, he cheers in joy and dances to celebrate his freedom. Not knowing what to do now that Babidi is dead, Buu proceeds to continue on his murderous rampage, this time, uncontrolled, destroying city after city. During this rampage, Buu meets a girl he is interested in, but soon turns her into candy and eats her. Later, Buu meets a blind boy named Tommy. Upset that Tommy does not run away scared, Buu heals the boy. However, the boy still treats Buu with kindness. In return, Buu brings a carton of milk (in fact, an old man he turned into a carton of milk) to Tommy.

Surprising friendship with Mr. Satan
A day later, he is challenged by Gotenks and quickly defeats him. He then builds a house made out of humans and animals he turned into clay, where he meets Mr. Satan who attempts numerous times to kill Buu through poison, explosives and even physical assault, all of which fail so miserably that Buu does not even realize that they are assassination attempts. Mr. Satan eventually gives up and begins performing maid services for Buu such as cooking for him and giving him baths. While he is living with Mr. Satan, Buu finds a hurt dog by the side of the road and brings it to Mr. Satan, perplexed at why it was not running away from him. Mr. Satan tells him that the dog is hurt, so in response, Buu heals him with his magic. The dog, who he names Bee, becomes the first creature to show affection to Buu and the first creature Buu shows genuine love for, such as licking him. This causes Mr. Satan to stop trying to kill Buu and instead try to find out why he murders people. Buu tells him that he just does it because Bibidi and Babidi told him to destroy. Mr. Satan tells him that killing people is actually wrong, which surprisingly shocks Buu, who then promises never to do any harm again.

Evil Buu emerges
It seems that the world is saved by Mr. Satan, now that the monster has been tamed. All is well until the two gunmen Van Zant and Smitty arrive with the goal of taking on Buu and shoot Bee as he is playing with Buu. This causes Buu to become more enraged than he has ever been, but this anger is quelled by Mr. Satan's disposing of the two gunmen and taking Bee back to Buu to be healed. The situation seems fixed as Buu rebuilds his house in the shape of Bee and Mr. Satan resumes his maid tasks. Buu now seems fully changed, playing with Bee and even asking Mr. Satan to sit and eat with him. Mr. Satan even destroys the fake pictures of Buu defeated that he had taken. This lasts until the gunman who shot Bee returns and shoots Mr. Satan in the chest. Buu is able to heal him but the pain of losing his best friend is so great that he struggles to control his anger. He finally has to expel all the evil inside of him in order to keep control. The evil leaves Buu in the form of a giant cloud taking most of his power with it. What is left of Majin Buu (now "Good Buu") watches as the cloud takes form and becomes Evil Buu. A battle soon ensues between the two Buus, the Evil Buu dominates over the Good Buu. Good Buu is ultimately turned into chocolate, after Evil Buu reflects his Chocolate Beam, and devoured causing them to re-merge into one being, Super Buu.

Though Super Buu is almost pure evil, Good Buu is still able to affect his actions slightly, preventing him from attacking Mr. Satan, Bee, and Videl on multiple occasions. He is later removed from Super Buu by Vegeta, and once the power of the Kais was removed from him, Super Buu reverted to the insane creature "created" by Bibidi, Kid Buu (the original Majin Buu). Although Good Buu is no longer connected with Kid Buu, his presence alone prevents the other Buu from attacking Mr. Satan and Bee on the Sacred World of the Kais until he is spat out.

Return of Good Buu
Good Buu is extremely pleased to see Bee and Mr. Satan are still alive, and then steps in the fight to defend Mr. Satan, and even though Kid Buu is far more powerful, he is able to land a few good hits on him due to his increased strength. He holds Kid Buu off while Goku and Vegeta ready the Super Spirit Bomb to defeat Kid Buu. Good Buu and Kid Buu battle ferociously, neither one of them backing down, with both Buus performing many techniques, such as the Multi-Form, Chocolate Beam, and more, but Kid Buu is clearly stronger, toying with Good Buu during the fight. After a hard battle, Good Buu is defeated by Kid Buu and presumed dead, so Vegeta battles Kid Buu while Goku readies the Spirit Bomb. The Spirit Bomb is finally formed after much delay, but Goku is unable to launch it due to Vegeta being immobile, right next to Kid Buu. Kid Buu prepares a final Planet Burst attack to kill Goku, when suddenly Good Buu appears again, not quite beaten yet. He and Mr. Satan rush into the battle, as Good Buu tackles Kid Buu, causing him to throw the attack without aim and misses, while Mr. Satan rescues Vegeta after Good Buu orders him to do so and gets him to safety. Goku throws the Spirit Bomb and after some struggle, the monster is finally defeated and the universe is saved. After the battle, Goku uses the Dragon Balls and wishes for no earthling to remember the havoc wreaked on the world by Majin Buu. In addition, in order to ensure that Buu not unleash a similar horror to Kid Buu again, Mr. Satan also forbade Good Buu from either getting angry ever again or at the very least not unleash his anger. Soon after, Good Buu is given the name Mr. Buu, and joins in the celebration of his evil counterpart's defeat at Capsule Corporation.

Yo! Son Goku and His Friends Return!!
Two years after Kid Buu's defeat, Mr. Buu attends Mr. Satan's Banquet along with the Z Fighters and their family and friends. During the fight against Abo and Kado (who later fuse into Aka), Mr. Buu does not participate in the fight but remains as a background character instead.[14]

Battle of Gods
Years after Kid Buu's defeat, Mr. Buu is at Bulma's birthday party with Mr. Satan. It is Buu who angers the God of Destruction Beerus when the latter interrupts the party:[15] when Beerus asks Mr. Buu for one or two of the custard puddings he has, Mr. Buu eats all of them and Beerus then decides to destroy the Earth. Mr. Buu participates in the battle, and he is blasted away into a lake by a Kiai from the God of Destruction. After the Z Fighters try to help Buu, Beerus retrieves Buu back from the water and slams the Majin's head into Gohan's.[16]

28th World Tournament
10 years after Kid Buu's defeat, Mr. Buu enters the 28th World Tournament at the end of the Dragon Ball Z Series, and during the ten years, he lost to Mr. Satan on purpose, and was promised to have his chance at being champion eventually. During this time, he apparently also got his own fanbase, as Goku noted that Buu seemed to acquire a lot of adoring fangirls when going to the ring for selection. He also convinced Buu to use his magic to rig the selection so that Buu can fight Goten, and that Goku fight Uub. Goku also tells Vegeta and Buu in private that Uub is the pure good human reincarnation of Kid Buu, much to Buu's surprise. With Goku and Uub withdrawal from the tournament, how far Buu progressed is unknown, but it is possible he either lost to Mr. Satan on purpose or to a Z Fighter who threw the match as Goku had previously promised.