Background and Origins
The origins of this conflict are as old as history itself, as it centered around the legendary Majin Buu, an entity that has existed since Time Immemorial. For eons upon eons, the original Majin would appear, causing destruction and mayhem before going into periods of hibernation. During one of his rampages, he absorbed the evil of mankind. Eventually, the wizard Bibidi discovered how to summon him and used him to rampage across Universe 7. Though many assumed Bibidi had created him, including the Supreme Kais, he was only the summoner of Kid Buu. Bibidi led Majin Buu to attack his enemies, the Supreme Kais of Universe 7, during a period when the seventh universe's God of Destruction Beerus was asleep, thus he was unable to intervene to prevent the dastardly attack on the Gods of Creation as it put his life on the line due to the Life Link, though it is unknown if Bibidi was aware of this fact. Kid Buu easily killed the West Supreme Kai and the North Supreme Kai before being confronted by the South Supreme Kai, only for him to fall victim to Kid Buu's Absorption, transforming the Majin into Huge Buu. As he was about to kill Shin, Daikaioh intervened and saved his fellow Kai by allowing himself to be absorbed by Kid Buu. Daikaioh's goodness counteracted the pure evil of Kid Buu, thus resulting in the creation of a Buu with an innocent, child-like personality that was neither completely good nor completely evil. However, Bibidi took advantage of Buu's new personality to manipulate him by promising him food and sweets for following his orders. Shin survived, though he was powerless to stop Buu. Bibidi continued to lead Buu on a rampage across the universe, punishing him when he misbehaved by trapping him inside the Sealed Ball. When he arrived on Earth, Shin took advantage of Majin Buu being sealed within the Sealed Ball and killed Bibidi before he could free Buu. Unfortunately, one of Bibidi's doppelgängers inherited Bibidi's powers upon his death, creating his "son" Babidi. Babidi sought to revive Majin Buu, kill Shin (who had become Universe 7's Supreme Kai due to the deaths and absorptions of the others) and rule the universe. Unfortunately, the Sealed Ball required lots of Kili to free Buu and Earth didn't have enough strong fighters with the power he needed. Babidi began building up his forces using Manipulation Sorcery to control those with evil hearts, even managing to convince the feared King of the Demon Realm, Dabura, to become his loyal servant.
Due to his various rampages throughout the early history of Universe 7, Majin Buu became a legendary monster known to experienced space farers such as King Cold and Lord Slug. King Cold even told his sons, Frieza and Cooler, to avoid ever opposing Majin Buu should they ever encounter the legendary monster, making him one of two beings Frieza would never dare oppose (the other being the God of Destruction Beerus, who became life-linked to his Universe's sole remaining Supreme Kai, Shin).
A Devious Plot
Seven years after the conclusion of the Cell Games, Babidi's forces appeared on Earth and Babidi took over two evil-hearted Earthlings, Spopovich and Yamu, which unlocked their potential and granted them the ability to utilize ki to perform Ki Blasts and Flight. He then gave them a Energy-Suction Device to collect Kili for Majin Buu's resurrection. Spopovich had been defeated during the 24th World Martial Arts Tournament by Mr. Satan, and entered the 25th Tournament looking to get revenge. During his first round match, he brutally beat Mr. Satan's daughter Videl to near-death, which greatly angered Gohan, who was competing in the tournament due to Videl's instance and had grown close to her while training her to fly. During Gohan's match with the mysterious Kibito, he transformed into a Super Saiyan 2 to intimidate Kibito. However, Shin, who had come to Earth with his attendant and bodyguard Kibito to thwart Babidi, used his power to paralyze Gohan, allowing Spopovich and Yamu to steal his energy with the device. Shin later reveals his identity as the Supreme Kai to the Z-Fighters, explaining that he was planning on using the pair to lead them to Babidi. He enlists the Z-Fighters (Goku, Vegeta, Gohan, Piccolo and Krillin) to help take down Babidi's forces before they could unleash Majin Buu on the universe.
The Magic of Babidi
The Z-Fighters are still searching for Spopovich and Yamu. They come across a spaceship and watch secretly as Spopovich and Yamu meet with Pui Pui, followed by Dabura and Babidi. Babidi takes the energy the two fighters have brought to him and kills them in a gruesome fashion. After sensing the hidden Z-Fighters, Dabura and Babidi plan to lure the Z-Fighters to drain them of their energy needed to revive a powerful foe sealed in a pink ball. Dabura engages the Z-Fighters and easily kills Kibito in the process. After brief fighting, Dabura manages to turn Krillin and Piccolo into stone statues with his spit. Dabura finally retreats back to the spaceship, leaving the remaining Z-Fighters questioning what to do next.
Shin explains that, in order to return Krillin and Piccolo back to their normal state, they must defeat Dabura. Shin, Gohan, Goku and Vegeta enter the ship in order to stop Babidi's plans and avenge their friends. Inside the spaceship, Pui Pui explains that they must defeat three fighters to get to Babidi, of which he is the first. The Z-Fighters agree and use the Rock-Paper-Scissors method to see who will fight Pui Pui, from which Vegeta is the winner. Babidi teleports Pui Pui and Vegeta to Pui Pui's home planet (since the planet has a gravity of ten times the level on Earth), to give Pui Pui the advantage. However, Vegeta, being accustomed to training at at least 450 times normal gravity, easily kills Pui Pui with little effort.
On the next level of the ship, it is Goku's turn to fight a monster called Yakon. Babidi teleports them to Yakon's planet of darkness. Yakon is able to eat light energy, so when Goku enters his Super Saiyan Full Power form in order to see, Yakon eats his aura and becomes even more powerful. Goku uses this to his advantage, generating more power than Yakon can handle by transforming into his Super Saiyan 2 form. As a result, Yakon eats so much energy that he explodes.
Back at the World Tournament, over half the fighters have been eliminated. Mr. Satan suggests a Battle Royale, so all 5 remaining fighters: Mr. Satan, Android 18, Mighty Mask (secretly Goten and Trunks in disguise), Killa and Jewel get in the ring at once. Killa and Jewel are defeated instantly, and the main struggle is between Mighty Mask and Android 18. However, Android 18 soon discovers that "Mighty Mask" is actually Goten and Trunks, and after Android 18 exposes the duo with an energy attack, they are disqualified. Only Android 18 and Mr. Satan are left, so Android 18 proposes that Mr. Satan give her 20 million zeni (double the tournament prize money) and she will let him win, as she doesn't want all the fame. He agrees and, using his Mr. Satan Miracle Special Ultra Super Megaton Punch, pretends to knock her out of the ring.
Meanwhile, on the third level of the ship, it is Gohan's turn to fight Dabura as he is the third remaining warrior protecting Babidi. They are transported to a mountainous range and engage in battle. At first, Gohan is a little rusty with his fighting skills, allowing Dabura to best him for a while until he transforms into a Super Saiyan and becomes roughly equal with Dabura. Vegeta, doubtful of Gohan's ability to beat Dabura, argues with Goku that he wishes to fight Dabura himself. Dabura notices the argument and asks Babidi to teleport them back.
Back at the ship, Dabura and Babidi realized that Vegeta has a lot of evil in his heart and could be used to their advantage. Babidi uses his magic to take control of Vegeta and quite easily does so, transforming him into Majin Vegeta, improving his power and turning him against his friends. Babidi transports the Z-Fighters and Majin Vegeta back to the World Tournament arena, where there is still a celebration over Mr. Satan's victory in the tournament. Majin Vegeta destroys a large portion of the stadium, killing many innocent people in the process, to convince Goku to fight him. Majin Vegeta reveals that Goku has surpassed Vegeta's ability and strength on many occasions and that he wants to regain his pride by beating Goku. The two are then teleported to a desert plane, where they engage in battle. The battle lasts for a good while and they seem evenly matched at first, but Goku hides his ultimate power. Majin Vegeta and Goku continue to battle while Gohan and Supreme Kai go off to fight Babidi. Majin Vegeta announces that he has not completely succumbed to Babidi's control but only allowed Babidi to turn him evil by his own desire to return to his old ways. Back at the spaceship, Gohan and Shin are about to fight Dabura and Babidi, but before they can, it is revealed that the machine has reached full power, which in turn will open up the Sealed Ball.
Majin Buu's Revival
Upon being released, Majin Buu prances around in an infantile manner. He is rather childish, but this doesn't fool Shin as he is well aware of the devastation Buu is capable of. When Majin Buu comes out of the egg, Goku and Majin Vegeta sense his energy and put the battle on hold. They realize the true danger and go to fight him, but Majin Vegeta tricks Goku into letting down his guard and attacks him from behind, knocking him unconcious. He then takes a Senzu Bean and flies off to fight Majin Buu without Goku's interference.
Initially the most surprising thing about Majin Buu is his childlike manner. This villain is unlike his predecessors Frieza and Cell, who were ruthless killers who delighted in causing pain and suffering towards others. This creature dances around the place, making unfunny jokes which only he finds amusing and speaks in a high-pitched voice. Many of the Z-Fighters underestimate Majin Buu because of his actions. Demon King Dabura makes this mistake and foolishly attacks Majin Buu. In this conflict, we begin to understand the creature's powers. Majin Buu has amazing regenerative capabilities. Any damage done to his body can be almost instantly repaired. When a hole is blown in Majin Buu's stomach, it is repaired quickly and it seems nothing ever happened to him.
Dabura tries a few attacks against Majin Buu. First, he unleashes a combination of kicks and punches, which fail to eliminate the tubby warrior. He then unleashes his spit, but Majin Buu dodges the attack. Dabura is dispatched quickly with Majin Buu's favorite technique, a beam of pink energy that shoots out of the tentacle in his head. This beam has the ability to convert anything it touches into anything Majin Buu wants, usually food. Dabura is turned into a cookie and gobbled up.
Majin Vegeta finally makes his way to the location of Majin Buu and Babidi's ship, but his entrance does not go unnoticed. He completely destroys Babidi's ship. Majin Buu goes up against Majin Vegeta, who manages to violently pummel Majin Buu. Majin Vegeta, whose abilities are equivalent to a Super Saiyan 2, continues to best Majin Buu in hand-to-hand combat, but Majin Buu keeps regenerating. Majin Buu, enraged, powers up and injures Majin Vegeta badly. Majin Buu then attacks the injured Saiyan and angrily beats him to a pulp. Majin Vegeta comes to the conclusion that he must do everything he can to safeguard his family and adoptive home. Realizing that Trunks is nearby, he hugs his son for a final goodbye and knocks out both him and Goten as they try to help, whilst Piccolo slices Babidi in half. Piccolo and Krillin fly them away and Majin Vegeta commits suicide by creating a massive explosion that seemingly vaporizes Majin Buu. Despite this sacrifice, Majin Buu simply reforms and regenerates Babidi from Piccolo's attack.
Bulma and the others go around collecting the Dragon Balls. They summon Shenron and make the first wish that everyone who died since the morning of the World Martial Arts Tournament can come back to life. All the people killed by Majin Vegeta and Dabura come back to life. Goku teleports there and stops them from making the next wish, and Shenron goes away for 4 months instead of a whole year. He then teleports them all to Kami's Lookout before informing them of Vegeta's death and Gohan's disappearance, much to Chi-Chi, Bulma and Videl's horror. Meanwhile, Shin has been wandering around trying to find Gohan, and the wished-back Kibito finds and heals them both. Kibito then teleports them all to the Sacred World of the Kais. The first mortal to actually step foot on the Kai Planet, Gohan begins training with the Z Sword after pulling it from the stone.
Goku subsequently begins to teach Goten and Trunks how to do the Fusion Dance. Goku has learned this technique from an alien race called the Metamori, during his seven years spent in the Other World after Super Perfect Cell's defeat. It will take a long time for them to learn this, more time than Goku has. Since Goku is pressed for time, he ends up showing Piccolo the dance so that he can continue the training. Meanwhile, Babidi desperately threatens to return Majin Buu to his ball unless Majin Buu complies with his orders. Babidi is on a mission to find Piccolo, Goten and Trunks because of their earlier interference. To help speed up this process, Babidi telepathically communicates with the people of Earth, forcing them to watch Majin Buu as he attacks a city. Majin Buu converts the entire population into jawbreakers, which he sucks up in one mighty gasp and eats. He then levels the city, much to Babidi's delight. The next city suffers the same fate, as he turns the population into chocolate bars.
In order to buy time for Trunks to get the Dragon Radar, Goku approaches Majin Buu and Babidi, and starts giving them a show of his strength. He figures this will be enough to impress Babidi, stall him, and keep Majin Buu occupied, also stalling him. Goku transforms into a Super Saiyan, then a Super Saiyan 2, and finally transforms into a Super Saiyan 3. The energy unleashed in this form startles everyone across the planet. Even Tien Shinhan and Chiaotzu can feel the power of Super Saiyan 3. Babidi doesn't seem too impressed with the first two forms since he has already witnessed them in Vegeta and Gohan, but the third one has a different effect. This still doesn't give Goten and Trunks enough time, so Goku decides to battle against Majin Buu. The battle starts off at a quick pace as Goku demonstrates his new powers. Goku once again holds back his efforts, because he knows that it isn't his job to save the Earth anymore and he wants to let the next generation of heroes, Goten and Trunks, to take over as Earth's protectors. During this battle, Goku is able to gain the upper hand, but cannot cause any permanent damage to Majin Buu, who regenerates from his every attack and even shocks Goku by performing one of Vegeta's techniques. After a while, Goku feels that enough time has passed and decides to return to the lookout. Goku thus succeeds in giving Goten and Trunks the sufficient time for their training.
Majin Buu grows tired of Babidi and, through simple trickery, is able to dispose of the wizard by punching his head clean off and then disintegrating his body. Between bouts of mass destruction and his childish-like acts, Majin Buu builds a house and meets Mr. Satan.
The Super Saiyan 3 transformation has decreased Goku's time on Earth, so when he arrives at the lookout, it is already too late and he must go back to the Other World. Piccolo continues to teach the boys the Fusion Dance and, after two mishaps where they fail miserably, they successfully fuse to make the warrior Gotenks. Gotenks then flies off to fight Majin Buu, who still proves to be stronger and subsequently beats him.
In the Other World, Goku finds Gohan alive and, during training, the Z Sword is broken due to an accident with a block of Katchin, the strongest metal in the universe. Old Kai comes out and begins to unlock Gohan's inner latent potential with his magical powers.
Mr. Satan had lied about having destroyed Super Perfect Cell several years ago and, now that the Earth is in danger again, the people turn to him for help. Arriving at Majin Buu's house, Mr. Satan befriends the pink monster and even convinces him to give up killing. Majin Buu adopts a puppy called "Bee" and things seem to be going well. However, two men named Van Zant and Smitty then arrive and shoot the puppy, along with Mr. Satan.
The Evil Buu
We are introduced to Evil Buu, who looks like a gray and emaciated version of Good Buu. Evil Buu kills Van Zant with a Guilty Flash attack and then confronts Good Buu. Good Buu fights valiantly, but proves to be no match for Evil Buu, as he had expelled the bulk of his power along with his evil. Desperate, Good Buu fires the Transfiguration Beam at Evil Buu, but Evil Buu simply reflects it back at him. Good Buu is turned into chocolate and quickly eaten by Evil Buu, who then transforms into Super Buu, who is even more intelligent, powerful and ruthless than Evil Buu. Terrified, Smitty opens fire on Super Buu with a machine gun, but to no avail due to Super Buu's regeneration. Super Buu liquifies his body and shoots down Smitty's throat, causing him to swell up and explode. Super Buu regenerates, and then sees Mr. Satan and Bee. He rushes to attack them, but suddenly stops. After a few moments, he utters Mr. Satan's name, and then flies away. Through this, Mr. Satan realizes that the Good Buu is still in Super Buu somewhere.
Now possessing Ki Sense, Buu rushes to the Lookout, where the Dragon Team and their friends are waiting for Trunks and Goten to perfect the Fusion Dance; however, at the moment, the two are asleep. Buu demands to see the strong fighter that Goku promised him, but he is a day early. Desperate, Piccolo begs him to wait a little longer and tells him to spend the time killing any remaining humans he can find, knowing that they can use the Dragon Balls to bring them back. After a quick walk around the Lookout, Buu unleashes the deadly Human Extinction Attack, which homes in on all humans left on Earth besides those present on the Lookout and Korin's Tower and kills them; only Tien, Chiaotzu, Android 17, Mr. Satan and Bee manage to survive. Through it all, Trunks and Goten sleep while Krillin tries in vain to wake them up.
A horrified Piccolo asks Buu to wait one more hour for the fighter to prepare himself, conjuring an hourglass through Magic Materialization so Buu will know when the time is up. Buu at first refuses and attempts to kill Videl when she badmouths him, but after learning that Videl is Mr. Satan's daughter, Buu agrees, but vows to kill everyone present if the fighter is not ready within the time limit. At this, Trunks and Goten finally wake up. Angered over Gohan's apparent death at Buu's hands, Chi-Chi foolishly confronts him, despite Goten and Piccolo's warnings, slapping him across the face and verbally attacking him. An enraged Buu promptly screams "Turn into an egg!" at her, transforms Chi-Chi into an egg and promptly crushes her to death with his foot. Shocked and upset over the death of his mother, Goten attempts to attack Buu, but Piccolo orders him not to and tells Goten that they'll bring both Chi-Chi and Gohan back to life with the Dragon Balls. After further persuasion from Trunks and Piccolo, the latter leads them to the Hyperbolic Time Chamber, where they immediately begin training.
Soon afterwards, Videl asks Piccolo how Buu knows her father, and he explains that Mr. Satan had tried to reform Buu and nearly succeeded, and the new Buu still remembers "a man and the kindness that he showed a monster". Buu's patience runs out after thirty minutes, and he demands to see the fighter, creating shockwaves that cause considerable damage to the Lookout in his rage. Piccolo agrees to lead him to the fighter, and does so, with Krillin, Master Roshi, Yamcha, Bulma, the Ox-King, Videl, Android 18, Marron, Dende and Mr. Popo secretly following them. In an attempt to buy Trunks and Goten as much time as possible, Piccolo takes a long way and goes through numerous detours. After stalling Buu for as long as he can, Piccolo telepathically communicates with Trunks and Goten, warning them of Buu's coming and that they have one minute (six hours in the chamber) left before he arrives.
Piccolo and Buu enter the Hyperbolic Time Chamber, where Trunks and Goten prepare to fuse. A skeptical Buu punches out Trunks before they can, but Trunks orders him to wait so they can give him a challenge, and they then fuse, becoming Gotenks. The battle begins, but unfortunately, Trunks and Goten had earlier made a plan to drag the fight out as long as possible to make their victory all the more dramatic, and thus, Gotenks simply goofs off rather than quickly ending the fight. Gotenks uses numerous silly-named attacks that do little, if anything, to Buu, and after being repeatedly knocked around, finally decides to get a little serious and becomes a Super Saiyan. Gotenks proceeds to use more effective attacks, such as the Galactic Donut and Super Ghost Kamikaze Attack, which cause significant damage to Buu, the latter blowing him to pieces. Gotenks and Piccolo quickly burn the pieces to ash in an attempt to stop Buu from regenerating, but even this doesn't stop him from doing so. At that moment, Gotenks declares that he is beaten and can fight no longer, though this is secretly a trick. Unfortunately, Piccolo takes him seriously and goes for his backup plan; he destroys the entrance to the Hyperbolic Time Chamber, leaving the three of them trapped inside for eternity.
Unfortunately, things do not go as Piccolo planned. Buu, horrified at the thought of never eating sweets again, screams with such force that he tears a hole in the dimensional barrier back to Earth, which he quickly jumps through. Unfortunately, the hole closes up before Gotenks and Piccolo can follow. With no one able to stop him, Buu murders Krillin, Android 18, Videl, Bulma and everyone else on the lookout by turning them into candy before devouring them (Dende was secretly thrown off the Lookout by Mr. Popo before he gets killed by Super Buu). In the Time Chamber, Gotenks reveals his secret weapon; he transforms into a Super Saiyan 3 and screams a second hole, which they use to escape. After seeing that Buu has murdered all of his friends, Gotenks gets angry and vows to make Buu pay.
Gotenks and Buu do battle on the lookout, completely destroying it. The battle wages on in the skies, with Gotenks being on par with Buu. Near the end of the fight, a beaten and battered Gotenks gains control and leaves Buu on the verge of death. As he moves in to finish him off, the power of Super Saiyan 3 fades, and he reverts to his base form. Without the power of Super Saiyan 3, Gotenks realizes that he is no match for Buu, who manages to regenerate, completely refreshing his life energy. Soon after, Gotenks defuses and becomes Trunks and Goten again. Piccolo believes that all hope is lost, but is still determined to make a final stand.
After some time on the Sacred World of the Kais and impressive training from the Old Kai, Gohan becomes very strong. After awakening his potential, he heads back to Earth. He makes his way back to find out what has happened to Earth and encounters Buu, demanding a battle with him in an attempt to save the world. Gohan starts off strong and completely overpowers Buu. Suddenly, Buu realizes Gohan is too much for him and that he will surely be killed. He powers up and tells Gohan he will self-destruct, taking everyone with him. As Gohan grabs the others and flies away, Buu explodes. However, Buu is not completely destroyed and regenerates. He understands that Goten and Trunks must wait one whole hour to fuse again and hides in the meantime. During this time, they locate Dende, who explains that Mr. Popo threw him off the Lookout to ensure that the Dragon Balls would still be around, and also rescue an exhausted Mr. Satan and Bee. Mr. Satan is shocked and horrified to learn that Videl was murdered by Super Buu and he angrily berates Gohan for not saving his daughter, though Gohan explains that he wasn't there when Super Buu killed everybody on the Lookout. Goten tells Mr. Satan not to worry and that they'll wish her back to life with the Dragon Balls. After the hour is up, Buu returns and challenges Gotenks again, which Gohan and Piccolo allow. Mr. Satan angrily tells Super Buu that he has broken his promise to not kill anybody. However, the minute Goten and Trunks fuse, Buu quickly absorbs both him and Piccolo, adding their power to his own. With Gotenks' techniques and raw power, along with Piccolo's intelligence, added to his own might, Buu is now even more dangerous than before.
Gohan and Buu continue their battle, but Buu is now the stronger being. Seeing this, Old Kai decides to send Goku back to Earth; however, knowing that Goku, being dead, is forbidden to return to the mortal world without permission, Old Kai transfers his life force to Goku, bringing him back to life at the cost of his own. Back on Earth, Tien arrives to back Gohan up, but after a short battle, Buu easily disposes of him.
Meanwhile, Goku prepares to teleport back to Earth, but Old Kai tells him to wait and gives him the Potara earrings, which will allow him to fuse with Gohan and defeat Buu. As a test, he has Shin and Kibito fuse together into Kibito Kai, and only then does he inform them that this fusion is permanent, proceeding to reveal that he is a victim of Potara fusion himself.
The Ultimate Fusion
Goku returns to Earth just in time to prevent Buu from killing Gohan and Tien. He throws Gohan one of the Potara earrings, but Gohan drops it. While Gohan searches for it, Goku powers up to Super Saiyan 3 and attempts to hold Buu off. Just as Gohan manages to find the Potara earring, Gotenks' fusion wears off inside of Buu's body, decreasing his power level significantly.
Goku decides that fusion will not be necessary now, but at that moment, Buu absorbs Gohan, once again gaining the upper hand. Desperate, Goku searches for someone to fuse with, but only sees Dende and Mr. Satan nearby. Goku ultimately decides to fuse with Mr. Satan, as the latter's martial arts skills might make him a bit stronger, and is just about to throw the Potara to him when he senses a familiar power level...
Realizing the desperate situation, King Yemma and Fortuneteller Baba have granted Vegeta a one-day pass back to Earth to fight Buu. Goku and Vegeta fight Buu as Super Saiyan 2s for a while, but are easily defeated. All the while, Goku attempts to persuade Vegeta to fuse with him, but Vegeta unsurprisingly refuses. It is only after Goku informs him that Bulma has been murdered by Buu that Vegeta agrees to fuse. With that, Goku and Vegeta use the Potara earrings to merge into Vegito.
Super Buu has difficulty fighting the fused being, throwing everything he has and finding it insufficient. Whatever Super Buu tries to do to Vegito, Vegito counters twice as hard. After the fight begins, Vegito decides to turn it up a notch and transforms into a Super Saiyan. This proves to be another brick wall for Super Buu as Vegito is 3 times as strong as he was before. During the fight, Super Buu explodes, and his rage begins to tear holes in reality, threatening to destroy the entire universe, though Vegito, with some difficulty, manages to stop him. Buu pulls his trump card and transforms Vegito into a coffee-flavored jawbreaker; however, Vegito still retains his intelligence and power, and beats the living tar out of Buu until Buu turns him back to normal. Vegito then decides to allow Buu ten seconds to do whatever he wants, planning to kill him when the ten seconds are up. As Vegito reaches nine, Buu absorbs him.
Watching this, Old Kai and Kibito Kai at first believe that all hope is lost, but then realize that Buu has not gained any of Vegito's traits; thus, the fight is not over yet. Buu, however, believing that he has won, goes on a rampage through West City, only wishing that he had spared some people for more entertainment.
It turns out that Old Kai's predictions were true; before he was absorbed, Vegito erected an Energy Barrier around himself to prevent himself from being completely absorbed into Buu. He purposely allowed this to happen to save Gohan, Goten, Trunks and Piccolo. The moment he puts the barrier down, however, Vegito suddenly separates back into Goku and Vegeta. Vegeta, stating that nothing is worth being fused with Goku forever, crushes the Potara earrings to powder without hesitation. They encounter numerous hardships while traveling through Buu's body, such as massive parasitic worms and illusions of Gotenks, Gohan and Piccolo.
Goku and Vegeta reach Buu's brain, where they find Gohan, Goten, Trunks, Piccolo and Good Buu wrapped in pods; by reading Good Buu's mind, they discover what occurred during Buu's first rampage five million years before. They proceed to cut their friends loose, and Buu, realizing what is going on, sends a mental image of himself to stop them. Buu very nearly kills Goku, but Vegeta stops him, threatening to cut loose the good Buu. Super Buu, terrified, pleads with Vegeta not to, telling him "If you tear those attachments, I won't be me anymore!". Unfortunately, Vegeta believes that Super Buu is just bluffing and he cuts the good Buu loose, causing Super Buu's body to begin a chaotic breakdown. Goku and Vegeta narrowly manage to escape with their friends, and watch as Super Buu undergoes a final transformation into the highly irrational and insane Kid Buu.
Goku vs. Kid Buu
Kid Buu's first target is the Earth, which, in a psychotic episode, he completely annihilates in a single energy blast as soon as his transformation is complete. Gohan, Piccolo, Goten, Trunks, Tien, Chiaotzu, Android 17, Yajirobe and Korin are all killed in the ensuing blast. Goku, Vegeta, Mr. Satan, Dende and Bee barely manage to survive after Kibito Kai saves them by using Instant Transmission to transport them to the Sacred World of the Kais. Vegeta snaps at Goku and angrily berates him for causing the needless deaths of their sons. However, Kid Buu reforms in the midst of Earth's shattered remains and goes on a murderous rampage throughout the universe, before tracking down the surviving heroes and engaging in one last climactic battle with Goku and Vegeta. Goku starts off in the Super Saiyan form, but after a brief fight, Goku furiously exclaims that, because of a "despicable guy" like Buu, his family and friends are all dead, before unleashing his fury and transforming into a Super Saiyan 2, vowing to make him suffer for all the evil he's done. He tries to conserve energy and actually holds up pretty well. Realizing a few minutes into the battle that Kid Buu is tougher than he looks, Goku transforms into a Super Saiyan 3.
He then fights Kid Buu, but can't defeat him due to Kid Buu's regeneration technique and perpetual strength. Goku launches a Kamehameha wave at Kid Buu, exhausting himself and not even finishing Kid Buu off. Vegeta steps in, but is no match for the likes of Kid Buu. Just before he is killed, Goku resumes fighting at Super Saiyan 3. As they battle, Vegeta comes to accept that Goku is stronger than him. Goku curses, having wasted too much energy in the fight. Vegeta decides to step in, allowing the tired Goku to rest and gather his energy for a final attack. Kid Buu engages in battle with Vegeta as a Super Saiyan 2. Kid Buu rejuvenates himself too many times for Vegeta's energy to catch up.
Vegeta does his best to give Goku the time he needs, but for some reason, it's taking longer than expected. Eventually, Vegeta falls, so Mr. Satan steps in and challenges Kid Buu, but Kid Buu finds himself unable to attack. He spits out something that turns out to be Good Buu. Mr. Satan overcomes his cowardice to fight for his unconscious friend. When Good Buu wakes up, he saves Mr. Satan and begins fighting Kid Buu. Meanwhile, Vegeta tells Dende, Kibito Kai and Old Kai to travel to New Namek where they summon Porunga. Vegeta has them wish for the restoration of Earth and the revival of everyone killed since the morning of the World Martial Arts Tournament, except for the most evil ones. The Dragon complies and Vegeta then explains his plan to defeat Kid Buu: a Super Spirit Bomb made from the freely-given energy of the people of Earth, transferred through Goku.
He communicates to the entire planet via King Kai, asking the people of Earth to give their energy to power the attack, but only their friends and families believe him. Meanwhile, Good Buu is defeated by Kid Buu. Vegeta, who just regained his life from Porunga, attempts to hold off Kid Buu again so that the Super Spirit Bomb can be completed. Goku asks the people of Earth for help, but only a few people Goku helped in the past actually give him their energy. Things look hopeless until Mr. Satan proceeds to tell the people to give up their energy so that he can defeat Kid Buu. The Super Spirit Bomb is finished, but Kid Buu has defeated Vegeta, who is now too weak to move. Kid Buu knows Goku won't fire the Super Spirit Bomb because it would destroy his friend, so he stands on top of Vegeta while continuing to blast away at Goku.
Good Buu uses the last of his strength to knock Kid Buu over. He tells Mr. Satan to grab Vegeta. Kid Buu recovers and blasts Good Buu. Goku throws the Super Spirit Bomb, but is exhausted. Kid Buu is able to stop the Spirit Bomb and redirect it towards Goku. Vegeta asks Dende to make one last wish: to restore Goku's strength. Porunga grants the wish and Goku feels renewed. He then transforms into a Super Saiyan and pushes the Super Spirit Bomb back towards Kid Buu. The Super Spirit Bomb hits its mark and Kid Buu's body disintegrates into nothingness, finally putting an end to his madness.
After reuniting with his family and friends at the Lookout, Goku uses the Dragon Balls to wish for the people of Earth to forget about Majin Buu, so that Good Buu can exist without being feared. He also hopes that, maybe someday, Kid Buu will come back as a good person and they can have a rematch. King Yemma hears Goku and decides to grant his request (unbeknownst to Goku, who has no idea that this has happened). Vegeta finally feels unthreatened by Goku's ability to surpass him. He also feels welcome with his own family and his newfound friends.
Ten years later, Bulma and Vegeta have had another child, Bulla, Goten and Trunks are now young teenagers, and Gohan has married Videl and they have a daughter named Pan, who wishes to follow in her grandfather's footsteps and become a Z-Fighter herself. At the World Martial Arts Tournament, the Z-Fighters meet a boy called Uub, who is the reincarnation of Kid Buu. Goku asks Majin Buu to change the numbers so that Goku can be matched with Uub. Goku and Uub begin to fight and it's clear that Uub has great potential. As they fight, Goku mocks Uub several times to see his true potential, which works. Goku cuts the match short by suggesting he train Uub. Goku asks Uub if they can have a rematch after he is trained. Uub agrees and Goku feels excited at the chance to become stronger, before they both take off into the sky with whoops of joy. This is the end of the original manga and the Dragon Ball Z anime, but Goku's story would continue in both Dragon Ball GT, which takes place five years later, and Dragon Ball Super, which takes place four years after Kid Buu's defeat.
In Dragon Ball Online, it is revealed that Good Buu would eventually long for companionship after reading Bob & Margaret, resulting in him using fission to create the first female Majin, Miss Buu, using ideas on females he got from Bob & Margaret. He and Miss Buu soon become husband and wife and, a year later, he and Miss Buu would develop the Love-Love Beam in order to have a child, Baby Buu. Their family continued to grow, resulting in the foundation of the Majin as a race. Good Buu's Majin descendants inherited the latent potential of Kid Buu within themselves which they could unlock through their Pure Majin form which grants them access to Kid Buu's form and abilities though comes at the cost of them potentially losing their "heart" and essentially become another incarnation of Kid Buu.
- World Tournament Saga
- Babidi Saga
- Majin Buu Saga
- Fusion Saga
- Kid Buu Saga
- Peaceful World Saga
- Demigra Incident
- Dragon Ball Xenoverse 2, 2016