Goku is introduced in the Dragon Ball manga and anime at 12 years of age (initially, he claims to be 14, but it is later clarified during the Tournament Saga that this is because Goku had trouble counting), as a young boy living in obscurity on Mount Paozu. Goku owns the Power Pole and the four-star Dragon Ball, inheritances from his grandfather. One day, after doing his daily chores, Goku is hit by a car when on his way home after catching a Giant Fish. Having never seen a car before, he assumes it is a monster attacking him. When the driver shoots Goku with a gun, she becomes scared after seeing that it hardly does any damage and surrenders, revealing herself to be a Human girl, named Bulma. Goku states that he has never seen a girl before and that the only human he has seen in his life is his deceased grandfather.
Goku takes Bulma to his house, where she ends up discovering his four star Dragon Ball. However, Goku does not want Bulma touching it since it is precious to him, so Bulma decides to let Goku to join her on a quest to collect all seven Dragon Balls to summon the Dragon, not revealing to him that the Dragon Balls would be scattered across the Earth once they succeeded. Later that night, when camping in Bulma's Capsule House, Goku is introduced to various technology such as Television, lights and even a bath. Early the next morning, Goku is surprised when he learns a bit about the anatomy of women after he takes Bulma's underwear off while she is sleeping.
Later that morning, Goku meets Turtle, whom he decides to take back to the ocean, forcing Bulma to come along. After defeating a Bear Thief who wants to eat the turtle, they make it to the beach, where he meets his future master, the turtle hermit, Master Roshi. When the turtle hermit meets them, he rewards Goku with a flying cloud called the Flying Nimbus, that only allows people of pure heart to ride it, with which Goku has no difficulty. Bulma also receives the three star Dragon Ball out of this, in exchange for showing the old horn-dog her underwear (however, she is actually nude, because Goku had pulled them off the night before).
Three days later, Goku and Bulma end up in Aru Village, which is under control by an evil shapeshifter named Oolong, who kidnaps the villagers' daughters. After Goku fails to impersonate Pochawompa in an attempt to find the location of Oolong's hideout, he decides to face Oolong head on. After chasing him outside the village, Goku manages to capture him, forcing Oolong to give the villagers back their daughters. Afterward, they are rewarded the six star Dragon Ball and Oolong is forced to join Goku and Bulma on their quest. While crossing the Diablo Desert on their way to Fire Mountain, Goku fights a bandit named Yamcha, who is friends with a former classmate of Oolong, named Puar. Goku and Yamcha have a duel, and Yamcha is surprised when Goku brings out his Power Pole, learning that he is the grandson of the legendary martial artist, Gohan. After nearly losing to Yamcha's Wolf Fang Fist due to hunger, Bulma awakens, causing Yamcha to flee due to of his fear of women. Later that night, Goku and the others stay the night in Oolong's House-Wagon, where Goku tells Oolong about the Dragon Balls while Yamcha and Puar hide outside and listen, also learning of the mystical spheres. The next morning, Goku fights Yamcha again after he destroys the House-Wagon and attempts to rob them. Goku knocks out his opponent's tooth and Yamcha, in a false display of apology, gives them a car that secretly has a tracking device for him to follow them. Two days later, the gang ends up at Fire Mountain, where Goku ends up fighting the Ox-King after he attempts to kill Bulma and Oolong. After Goku summons the Flying Nimbus, the Ox-King stops fighting and tells Goku that the man who gave Goku that cloud is the same master that taught him. In an effort to douse the fire surrounding the Ox-King's castle at the top of the mountain, Goku is sent to retrieve the Bansho Fan from Master Roshi after picking up the Ox-King's daughter, Chi-Chi. When they arrive at Master Roshi's Island, he tells them that he accidentally threw the fan out and decides to come there himself and put out the flames. When they get back to Fire Mountain, Master Roshi uses a technique called the Kamehameha to put out the flames, unfortunately destroying the mountain as well. Much to Master Roshi's surprise, Goku immediately imitates the wave and makes one big enough to destroy their car. While Bulma and Oolong find the Dragon Ball in the rubble, Master Roshi asks that Goku trains with him after finishing his quest for the Dragon Balls.
On their way to the last Dragon Ball, they take a break at a town which is ruled by a gang known as the Rabbit Mob. While there, Goku and Bulma get into trouble with the Rabbit Mob, but Goku defeats their leader, Monster Carrot with the help of Yamcha. When they get back on the road, they are attacked by a robot piloted by Shu, who steals five of their Dragon Balls. Luckily, though, Goku insists on keeping his four-star ball with him instead of with the rest of the Dragon Balls. Yamcha gives them a lift to Pilaf's Castle to get them back. However, once they arrive, they get locked in a room filled with sleeping gas, where Goku's four-star Dragon Ball is stolen.
When they wake up, Emperor Pilaf summons Shenron and tries to use the wish to rule the world, but his plan is foiled when Oolong interferes and wishes for a pair of panties after getting out from a small hole made by Goku's Kamehameha. After trying to escape, the gang is placed into a special cell that will fry them when the sun comes out. Goku ends up looking at the full moon that night, causing him to turn into a Great Ape and destroy the cell along with the rest of Pilaf's castle. Seeing Goku out of control in the ape form, Yamcha grabs Goku's tail and has Puar turn into a pair of scissors to cut Goku's tail off, causing him to revert to his normal form. The next morning, Oolong begins to speculate that Goku is not a human, raising the question of whether he is "some kinda space alien." Declining the offer of his new friends to come with them to West City, Goku bids them goodbye to train with Roshi. While flying off on the Nimbus, Goku cheerfully says the world is an amazing place.
Tournament Saga
After finishing his quest for the Dragon Balls, Goku leaves Bulma and the others in order to train with Master Roshi. Roshi agrees to train Goku, but only if he finds him a pretty girl. After failing to bring him a decent girl, another wannabe student named Krillin arrives on the island, also wanting to train under Roshi, and assists Goku. After Goku fights off some Police officers, while Krillin cowers behind him, they finally return with a girl with a split personality named Launch.
Satisfied with Launch, Roshi then brings Goku and Krillin to his special Training Island to train them. They are put through very strange training that seems like it has nothing to do with martial arts, such as milk delivering to increase stamina, construction work for strength, swimming away from killer sharks, dodging bee stings, all while wearing very heavy Turtle Shells. After the hard work, the two develop into two of the most powerful fighters on Earth. The huge boulder Roshi showed the boys much earlier they could not push, they can now push, much to Roshi's surprise. After eight months of training, Roshi brings them to Papaya Island to compete in the 21st World Martial Arts Tournament to test their training. Upon their arrival, Goku is reunited with his friends Bulma, Yamcha, Oolong and Puar. Goku gets through the elimination rounds easily without even trying (even he is surprised at his remarkable new power) and makes it to the main tournament.
In the tournament, he is put up against a Gira named Giran in the quarterfinals. Goku struggles with the beast when he is trapped in Giran's Merry-Go-Round Gum, but his tail grows back causing him to break free and win the match, with Giran forfeiting from being scared of the young boy's power. In the semifinals he is put up against a warrior named Nam. Goku and Nam take the battle into the air, and each is almost knocked off the ring. Just before Goku is knocked out by Nam's Cross Arm Dive, Goku dodges and kicks him out of the ring. In the final round Goku battles with defending Champion Jackie Chun (really Master Roshi in disguise). During the battle, Goku turns back into a Great Ape and starts destroying the stadium. Jackie Chun who cannot leave the arena because they are still fighting destroys the Moon to revert Goku to his normal form. The two continue their match, both losing their energy at a rapid rate. Goku ends up losing the match and learns that he should always continue to train because there are always people out there who are more powerful.
Red Ribbon Army Saga
After coming runner up in the World Martial Arts Tournament, Goku is told by Master Roshi that he should go out and see the world, and Goku decides that he will use this opportunity to search of his grandfather's Four-Star Dragon Ball. At the beginning of his quest he helps save Nam's Village by accompanying him to Giran's Village in order to get the river flowing again. After completing this task, he decides to go skinny dipping in an oasis where he gets his Dragon Radar stolen by a homeless kid that sells it to an Antique Store in a nearby town. Once Goku gets there and gets his radar back, he confronts Emperor Pilaf, who is holding the four star Dragon Ball. After chasing Pilaf to his flying fortress, Goku receives the ball finding out that it is fake. While following the radar's signal he ends up meeting back up with Chi-Chi who had a wedding prepared for them. Goku and Chi-Chi quickly go together back to the Ox-King's Village to find that an organization called the Red Ribbon Army has attacked. Goku and Chi-Chi fight off the troops until they fled. Goku leaves Chi-Chi and the Ox-King in a hurry to go and chase them. He ends up in the Desert where he gets into Pilaf's flying fortress while the Red Ribbon Army was attacking it. After Pilaf's fortress is destroyed, Goku is caught in the explosion and wakes up in a forest where he meets a family of monkeys. After Goku finds the Dragon Ball, he battles Colonel Silver, who destroyed his Flying Nimbus. Goku easily defeats Silver, and knocks him out with his tail.
After seeing that the Dragon Ball he found was not his grandfather's Four-Star Ball, he has one of the army's auto pilot droids fly him to the next Dragon Ball. The plane crashes when the droid freezes, and Goku freezes, unable to move. He is then taken to Jingle Village by a girl named Suno. When he awakens, he hears that the Red Ribbon Army is there as well. Goku goes to their closest base known as Muscle Tower. Once he gets in he easily takes out three soldiers and then battles an android known as Major Metallitron. Goku wins the battle when Metallitron's batteries die and proceeds to the next floor where he fights the Ninja Murasaki. Goku easily defeats Murasaki and humiliates him, an example when Murasaki lands on Goku's Power Pole. Goku proves to be a difficult match for Murasaki and even his brothers, so he resorts to releasing Android 8. Android 8 ends up befriending Goku instead of fighting him because he dislikes violence, allowing Goku to reach the top of Muscle Tower. General White, the commander of the tower resorts to having his pet monster Buyon eat them, but the creature gets frozen and destroyed. General White is defeated and Goku saves the Jingle Village Chief while obtaining another Dragon Ball that Android 8 was hiding from the army.
Goku finds out from one of the village elders that his nimbus still works and decides to go to West City to have Bulma fix his Dragon Radar that broke. Goku arrives at Bulma's house, Capsule Corporation, and has her fix the radar. Bulma then decides to join Goku on his quest for his Dragon Ball using her new invention the Micro Band. While still in the city Goku meets back up with Yamcha, Oolong, and Puar. They decide to spend the day in the new theme park Dream Land, where they were stalked by a thief hired by the Red Ribbon Army, named Hasky. After being tricked by her she tries to get away with Goku's two Dragon Balls but he captures her and gets them back.
Goku and Bulma travel to the site of the next Dragon Ball which was located at the bottom of the sea. Not having a submarine, Goku and Bulma obtain one from Master Roshi who has Krillin join them. Under the ocean, they find a Pirate Cave, where they are chased by the Red Ribbon Army's strongest operative, General Blue. Goku defeated a Pirate Robot and a giant octopus named Octopapa while Krillin and Bulma were being attacked by Blue. Goku arrives to save them, but Goku is stunned by General Blue's telekinesis. Goku was able to break free when a mouse scares Blue. While the cave began to collapse, Goku quickly grabbed the Dragon Ball and saved his mouse friend and barely escaped with Bulma and Krillin in an old submarine they found. When they arrived back at Kame House, General Blue arrives and uses his telekinesis to tie everybody up and steal the Dragon Balls along with putting a bomb on the island to kill them. Luckily, Launch returned and set Goku free to get rid of the bomb and chase Blue.
Goku ends up chasing General Blue to Gengoro Island, where he crashes in a strange town named Penguin Village. While there Goku meets Arale Norimaki and the Gatchans who try to help Goku look for General Blue and the Dragon Balls. Arale introduces Goku to Taro and Akane who seemed interested in his flying nimbus. Goku searched through Penguin Village and asked many of the residents if they have seen General Blue. Arale takes Goku to her house to have Senbei fix his radar. While at the Norimaki house, General Blue shows up to steal Senbei's plane and fights Goku again. While using his telekinesis again on Goku, Arale surprises Goku by easily defeating him and headbutts General Blue far away. While Goku got his Dragon Balls back, he got his Dragon Radar stolen by Blue. Senbei's son, Turbo uses his powers to create him a new one with parts from Senbei's plane so he can continue his quest.
Goku's next location was the Sacred Land of Korin where he defeats Captain Yellow and finally retrieves his four star Dragon Ball. There, he meets two of the lands natives, a powerful warrior named Bora and his son Upa. Seeing that their best soldiers had failed against Goku, the Red Ribbon Army turned to the world's deadliest assassin, Mercenary Tao, to kill him. Tao arrives to Goku's location and murders Bora with ease. Goku then attacks him. Goku loses against Tao in the battle against his Dodon Ray but survived because the four star ball in his shirt blocked the full force of the blast. While Tao decides to stay in a town for a couple of days, Goku decides to climb Korin Tower to get the Sacred Water of Korin. When he gets to the top, it takes Goku three days to snatch it from him. Goku drinks the water, yet does not feel any different, which Korin explained was not that the water made him stronger, but the training to try and get to it made him stronger. When Tao returns, Goku comes back and defeats him in battle by kicking one of Tao's grenades back at him, thrown after he pretended to give up.
Feeling sad for Upa who lost his father to Tao, Goku decides that he will defeat the entire Red Ribbon Army and gather the Dragon Balls to bring his father back to life. Goku travels to the main Red Ribbon Army Headquarters to defeat them. While Goku is taking out several of the soldiers, Staff Officer Black kills Commander Red after learning that he just wants to be tall and not achieve world domination. Goku fights Black who uses a battle robot, Goku kills him defeating the entire army and gathering six of the Dragon Balls. When Goku leaves the base he sees all of his friends just outside of it ready to help him, but Goku tells them he already defeated them, greatly surprising everyone.
Fortuneteller Baba Saga
After Goku's victory against the Red Ribbon Army, he is still missing one more Dragon Ball to revive Bora, but for some reason, Bulma's Dragon Radar cannot locate it. Roshi tells Goku about his older sister Baba who can find anything. Goku sets out to Fortuneteller Baba's Palace with Yamcha, Krillin, Upa and Puar. Baba turns out to not be so generous, forcing them to fight her five strongest warriors to get their request. The first two warriors are taken care of by Goku's friends, but Yamcha is defeated by the third warrior, Bandages the Mummy. Goku, the team's last fighter, takes him out along with the fourth fighter, Spike the Devil Man in Devil's Toilet. After that, Goku is put up against the fifth fighter, who seems very familiar to Goku and Roshi (who had joined the group as a spectator). The mysterious fighter ruthlessly whips Goku around by his tail until it simply rips off. Goku then wins the fight, and the fifth fighter is revealed to be his Grandpa Gohan, who was brought back from the Other World for a day. Baba reveals the Dragon Ball to be in a case Emperor Pilaf has. Goku confronts Pilaf in his new robot fused with Shu and Mai's robots and easily defeats them. With all the Dragon Balls in his power, Goku calls Shenron and revives Bora. After the wish is granted, Goku grabs the four-star ball before the others scatter.
Goku prepares for the next World Martial Arts Tournament by going out into the world and training himself by the request of Master Roshi. Goku ends up meeting a girl named Chao and saves her village from two bandits known as Terror and Plague. He later stumbles into a city where he meets Chin Taiken, the master of the Chin-Star School and defeats Sky Dragon, the master of the Panther-Fang School for the title of Master of Martial Arts. Goku goes to Demon Land and saves Princess Misa from Shula with the help of Gola and Melee. Goku later chases after a monster named InoShikaCho that he later finds out is working with two martial artists named Tien Shinhan and Chiaotzu in scamming villages. Goku saves InoShikaCho when Tien and Chiaotzu betray him and with the help of Tanmen, he convinces everyone that he is good. After three years are up, Goku begins his travel to Papaya Island but gets a little delayed when his new friend Konkichi gets into trouble with a gang.
Tien Shinhan Saga
By the time the 22nd World Martial Arts Tournament starts, Goku is 15 years old (though he still looks younger than 10). Goku's strongest opponent is Tien Shinhan, a warrior trained by Master Roshi's nemesis, Master Shen - the Crane Hermit. Like Yamcha, Puar and Oolong before them, Tien, along with his best friend Chiaotzu, will eventually side with Goku. In the preliminaries, Goku is set up against a champion from a previous World Tournament, King Chappa. Goku easily defeats him, and then goes on to defeat Pamput, a famous movie star, in the quarterfinals. In the semifinals Goku is set up against his best friend Krillin, and defeats him after a fierce battle.
Goku moves on to fight Tien and his Crane School style in the final round. Midway during the match, Goku is repeatedly paralyzed and pinned down by Chiaotzu and his Telekinesis technique, at the orders of Master Shen. After Goku is freed from Chiaotzu's Telekinesis, the match continues as normal until Tien decides to use the Tri-Beam attack to destroy the stage. In mid-air, Goku knocks out Tien by using a Kamehameha to swiftly propel himself into Tien's stomach. Falling at the same rate, Goku hits the ground first after crashing into a van, leaving Tien as the Tournament winner.
King Piccolo Saga
Right after the conclusion of the 22nd World Martial Arts Tournament, King Piccolo appears in the scene. Goku accidentally left his belongings behind and when Krillin went to pick them up at the area, he is killed by Tambourine, one of King Piccolo's mutated sons. Goku becomes angry, and chases after him through the skies, but still being fatigued from the tournament, Goku is defeated by Tambourine and his Flying Nimbus is destroyed. While trying to recover in the wilderness, Goku sees a giant fish and eats it, which belonged to a samurai named Yajirobe, who has a Dragon Ball. Cymbal, another one of Piccolo's sons, is sent to get the Dragon Ball, but is killed by Yajirobe with his sword.
After sensing Cymbal's death, Piccolo orders Tambourine to find his killer. Upon seeing Tambourine again, Goku finally destroys him. King Piccolo feels this and arrives at Goku and Yajirobe's location, Yajirobe's Prairie. Soon after King Piccolo appears, he fights Goku. Goku knocks him down a couple of times. It is then revealed that Piccolo was holding back on his power, and then he swiftly defeats Goku with his Masenko attack, causing Goku's heart to stop for a short time. Piccolo then takes the Dragon Ball Yajirobe gave to Goku. Yajirobe takes Goku to Korin Tower to help him recover.
Meanwhile, Tien, Master Roshi, and Chiaotzu try to stop King Piccolo from gathering the Dragon Balls, but fail and the latter two die in the attempt. King Piccolo calls Shenron and wishes for his youth to be restored, giving him the power he once had. King Piccolo then destroys Shenron, and goes on to King Furry's palace, in an attempt to rule the world.
Once Goku is healed, he heads out on a quest to find the Ultra Divine Water, a sacred liquid that unleashes the drinker's hidden powers if they have any, or kills them. Goku drinks the water and survives, then heads off to King Furry's castle where he finds King Piccolo's newest son, Drum assaulting Tien Shinhan. Goku steps in and defeats Drum, knocking his eyeballs out with one kick, and challenges King Piccolo to a battle. Goku overpowers King Piccolo, even throwing him into the castle. King Piccolo eventually goes to full power, despite it shortening his lifespan, but still can not defeat Goku. King Piccolo fires his signature attack, the Explosive Demon Wave, at Goku, but Tien saves him by flying into the sky, but Goku's leg is broken. Towards the end of the fight, King Piccolo uses Tien as a hostage, attempting to force Goku to surrender. Goku nearly resumes the fight despite the fact that Tien will die, thinking he could revive Tien with the Dragon Balls, until King Piccolo tells him he had destroyed Shenron. This leaves Goku at King Piccolo's mercy.
Goku ends up with a broken arm and two broken legs as a result of Piccolo's onslaught. As King Piccolo takes to the skies for his final attack, Goku, full of rage over the fact that Krillin and Master Roshi are gone forever, launches himself at King Piccolo with the one arm he had left, punching a hole through his chest and killing him. Moments before King Piccolo's death, however, he manages to spit out an egg far off in the distance that contains his final son and reincarnation, Piccolo Jr. to avenge his death and spread evil across the planet.
Piccolo Jr. Saga
After Goku defeats King Piccolo, he goes to Korin Tower, where Korin tells him about the Lookout, and that Kami, being the one that created the Dragon Balls, may be able to revive Shenron. At Kami's Lookout Goku overcomes Mr. Popo's challenge of speed, and Kami, the Guardian of Earth, brings the Dragon Balls back by giving new life to Shenron. Using the Dragon Balls, Krillin, Chiaotzu and Master Roshi are resurrected. In return, Kami asks Goku to train with him and Mr. Popo for the 23rd World Martial Arts Tournament to defeat Piccolo Jr., who wants revenge on Goku for killing his father. Goku's training consists of defeating Mr. Popo, who proves to be stronger than King Piccolo and for Goku to face a doll version of himself as a way of conquering his own self. With deep meditation, being still like a rock, but faster than lightning, Goku endures the toughest training of his life. During or after the training, Goku's tail is permanently taken off for the third and final time by Kami, who then makes a wish to the Eternal Dragon for the return of the moon. At some point during this training, Goku trained in the Hyperbolic Time Chamber, but was unable to last more than a month in it due to the intensity.
Goku returns three years later at the age of 18 (possibly 19 due to spending a month in the Time Chamber), to meet up with his friends and join the tournament and grown into a young man that no one recognizes. In the preliminaries, Goku is put up against King Chappa, who wants to avenge his loss from three years prior, but fails again. In the quarterfinals Goku is matched up against an unknown female fighter who seems to know who Goku is, and knows the fighting style that Master Roshi teaches. After Goku defeats her, she reveals herself to be Chi-Chi, whom Goku had unknowingly promised to marry years before thinking marriage was a type of food. Before leaving the ring, Goku asks for her hand in marriage.
In the semi-finals, Goku is put up against Tien Shinhan to settle the score from the last tournament. Goku and Tien seem to be even, until Goku removes his weighted clothing and becomes much faster, winning the match and leaving him against Piccolo Jr. in the final round. Before the fight started, Piccolo had trapped Kami inside a bottle with the Evil Containment Wave technique and ate the bottle, putting Goku at a stalemate; if he kills Piccolo, Kami will die too. The fight goes on for a while, but when the word spreads that Piccolo Jr. is the son of King Piccolo, the crowd flees. Goku encourages Piccolo Jr. to transform into his Giant form, tricking him to fly into his mouth to retrieve the bottle Kami was in. Afterward, the stage is destroyed as they go into full battle. Goku seems to be doing quite well against Piccolo, using the Meteor Combination rush, seemingly knocking him out, but Piccolo blasts a hole in Goku's shoulder, seriously handicapping him. Piccolo then makes sure Goku has no arms or legs to use, saying he will not make the same mistake his father did, letting Goku have one free arm to kill him with in the end. As Goku is about to die, he discovers how to fly and uses that energy to avoid one of Piccolo's attacks. He then finishes Piccolo off with the last amount of energy he has left with a full force headbutt to the chest giving Piccolo a ring out, thus giving Goku his first and only Tournament win. After Goku is declared victor, he gives Piccolo Jr. a Senzu Bean to keep Kami alive and give himself a good rival.
After Goku defeats Piccolo Jr., he travels with Chi-Chi to the Ox-King's Village to prepare for their wedding. But fire erupts at the castle, trapping the Ox-King inside the flames. Goku and Chi-Chi travel to find the Bancho Fan that Master Roshi once threw away in order to put out the fire. When they find it, they are forced to fight Annin, a guardian of the border between the living world and the Other World. Goku defeats Annin and returns with the fan, which successfully extinguishes the fire. Goku and Chi-Chi get married, concluding the original Dragon Ball series.
Interlude
When Gohan was born, Goku, Chi-Chi, and Ox-King were trying think of a name for him. When they couldn't come up with a good name, Goku decided to go fishing but was yelled at by Chi-Chi and asks if Grandpa Gohan taught him any manners. All of a sudden the baby starts to laugh and they decided to name him in honor of Goku's adoptive grandfather.
Saiyan Saga
In the beginning of Dragon Ball Z, Goku is 24 years old and is still living at Mount Paozu in a newly-built house near his old house, with his wife Chi-Chi and their four-year-old son, Gohan. After saving Gohan from falling down a waterfall, Goku drops by the Kame House with his son, to introduce him to Bulma, Master Roshi, and Krillin. All seems to be well, but suddenly, Goku senses a huge power nearby. The new threat arrives from space; Raditz, Goku's older brother. Raditz reveals to Goku his Saiyan heritage, and informs him that he was originally sent to Earth to destroy the planet's inhabitants and prepare it to be sold, but had forgotten about it due to his head injury as a baby. When Goku refuses to carry out his forgotten mission, Raditz delivers a single kick to Goku's ribs, knocking him down, and kidnaps Gohan, giving Goku an ultimatum: Raditz will kill Gohan unless Goku kills one hundred humans within the next twenty-four hours, and leaves them on the beach.
To defeat Raditz and save the Earth, Krillin and Master Roshi offer to help, but Goku does not accept their request, due to the fact that if they die again, they cannot be brought back, since they have already been killed. Piccolo, who had been listening to Raditz's speech while hiding behind the Kame House, asks Goku to help him fight this new being, so they join forces. When Piccolo and Goku find Raditz with Gohan locked up in his spacepod, Goku gives Raditz one last chance to free his son, but Raditz refuses. Goku and Piccolo both take off their weighted clothing to begin their fight. Even with their combined strength, Raditz still holds the upper hand. With the help of Gohan unleashing his inner powers to attack Raditz and weaken him, Goku and Piccolo come up with a plan to win.
Goku makes the ultimate sacrifice by holding Raditz in place so Piccolo can kill him with the powerful Special Beam Cannon, which manages to kill both Raditz and Goku. Just before he dies, however, Raditz informs Piccolo and Goku that two even more powerful Saiyans, Vegeta and Nappa are on their way to Earth, and will arrive in one year. With Krillin by his side, Goku dies, and Kami takes him to Other World where King Yemma tells Goku to take Snake Way to the planet of King Kai for additional training to defeat the Saiyans. During his journey, in filler, he encounters and escapes Princess Snake and even manages to escape Hell after accidentally falling off Snake Way.
When Goku finally makes it to King Kai's Planet, he mistakes King Kai's monkey, Bubbles, for the King himself, and he follows the monkey's actions until he meets the real King Kai. He is given ridiculous challenges before he starts his training, including having to tell King Kai a joke, catching Bubbles, and smashing his pet cricket, Gregory, on the head with a heavy hammer. Due to the planet's higher gravity which is 10x that of Earth's, Goku struggles with the challenges, but eventually completes them. After that, Goku masters several new techniques and increases his strength considerably. His friends on Earth manage to wish him back to life using the seven Dragon Balls, but, due to a miscalculation on King Kai's part (he forgot to take into account the time it would take to get back) he still must travel back down Snake Way, which King Kai estimates will take about two days at Goku's current power level in order to reach Earth and join the battle against the Saiyans, which was already underway and going badly for the Z Fighters.
By the time Goku arrives, Yamcha had been killed by a Saibaman, Chiaotzu had self-destructed in a failed attempt to kill Nappa, Tien Shinhan had killed himself by putting all his strength into a final but futile Spirit Tri-Beam, and Piccolo had sacrificed himself to save Gohan from a powerful attack launched by Nappa, which inadvertently killed Kami as well. Goku arrives on the scene, saving Gohan with the Nimbus Cloud from Nappa's power, and when he is informed by Krillin that everybody else has died in the battle, Goku goes in a rage, powering up, surprising Vegeta with his new power. Much to everyone's surprise, Goku had become powerful enough to defeat Nappa without much difficulty, avoiding Nappa's attacks, and taking Nappa's ultimate, the Break Cannon, head on without a problem. Vegeta Tells Nappa to stand down and tells Nappa to back down but before he does, he goes after Gohan and Krillin. When Nappa is about to kill Krillin and Gohan, Goku defeats him by using Kaio-ken Finish but Vegeta is the one who kills him at the end.
Knowing he will have to battle the more powerful Vegeta, Goku requests the move to an isolated location and Vegeta agrees. Before battling, Vegeta tries convincing Goku to join him but Goku refuses because he is content on Earth. As the battle unfolds, they seem even. Vegeta gains the upper hand with even the Kaio-ken not working. Goku, in a desperate attempt, powers up to Kaio-ken times three, and overpowers Vegeta, causing Vegeta to go in a rage and attempt to destroy the planet with a Galick Gun. Goku's Kaio-ken Kamehameha and Vegeta's Galick Gun blasts collide, and Goku beats Vegeta in the Beam Struggle by going Kaio-ken times four, however, causing his body great pain. When Vegeta returns, he transforms into a Great Ape after using a Power Ball, as Goku realizes he transformed before and he is the one who killed his grandfather, and apologizes for it, hoping for forgiveness.
After a long battle, Vegeta is eventually defeated by Goku's Kaio-ken and Spirit Bomb techniques, and the timely intervention of his remaining companions Krillin, Gohan and Yajirobe. However Goku had been brutally beaten to near death, with his legs getting crushed and broken by Vegeta in his Great Ape form. After the fight, Krillin attempts to take Vegeta's life using Yajirobe's Katana, but is stopped by Goku, who convinces him to spare his life to give him a second chance at changing his evil ways and hopes to have a rematch one day. After the battle with Vegeta, Goku is severely injured (to the extent that even the act of orderlies changing bandages was more than enough for him to undergo severe screaming fits out of agony that were loud enough for people immediately outside the ER to hear him), and Korin is out of Senzu Beans, so Goku has to stay behind in Wukong Hospital with Chi-Chi while Gohan, Krillin, and Bulma go to planet Namek to find the Namekian Dragon Balls in order to revive their fallen friends.
Frieza Saga
After a few weeks in the hospital, Goku learns from Master Roshi that Gohan, Krillin and Bulma have run into trouble on Planet Namek: a fully-healed Vegeta and the Frieza Force, whose leader is more powerful than Vegeta. Thankfully, Yajirobe delivers Korin's new batch of Senzu beans and gives one to Goku, which heals him completely. Goku then uses Dr. Brief's new spaceship, which he constructed from Goku's original Attack Ball, to travel to Namek as well. During his six-day trip to Namek, Goku uses the ship's artificial gravity machine to train himself for his upcoming battles. He starts off at 20x Earth's gravity and eventually works his way up to 100x. However, King Kai advises him to steer clear of Frieza, claiming that he is the strongest being in the universe and that Goku would stand no chance against his evil might.
Arriving on Namek, he senses Frieza and Captain Ginyu, noting on their power. Once again Goku enters a battle already in progress, this time saving Gohan, Krillin and Vegeta (who teamed up with the others) from the assault of Recoome, a member of Frieza's elite fighting squad, the Ginyu Force, who were called to dispose of the three. Goku heals the three of them with Senzu Beans, and shows his new powers by defeating Recoome with one elbow to the stomach, and then takes on Burter and Jeice together. Goku fools them into thinking his power level is only 5,000, because Goku rose his power in only the instant he attacked or defended. After dodging Jeice and Burter's attacks, Goku then takes out Burter, but is taken by surprise by the leader of the Force, Captain Ginyu, who has the ability to switch bodies with anyone he sees fit. After a little sparring, Goku powers up in front of Ginyu, with his power level scaring Ginyu and Jeice, as it was much higher than theirs. Critically injuring himself, Captain Ginyu then swaps bodies with the more powerful Goku but cannot fully control his new body and power. Vegeta takes this chance to battle him, seriously injuring Goku's body. Goku manages to get his body back after intercepting a beam sent by Captain Ginyu to swap bodies with Vegeta.
Goku's body, worn out and beaten, uses a Medical Machine inside Frieza's spaceship taking several hours to heal. When he emerges, once again it is to join a battle in progress, where Vegeta meets his doom against Frieza. Goku hears Vegeta's tearful departing speech about the torture Frieza inflicted on Vegeta and the Saiyans, and buries Vegeta and gives his respects. In anger, he declares that he will defeat Frieza in the name of the Saiyans and Namekians he killed. Goku and Frieza's battle begins, with Goku still having a decent amount of confidence in his abilities. Goku and Frieza start off evenly matched, but Frieza gains the upper hand after powering up to 50% of his full power. Goku's confidence transforms into frustration and fright at Frieza's power. Even with Frieza giving himself handicaps (such as not using his hands), Goku still cannot outmatch the tyrant.
After Goku combines Kaio-ken x20 and his Kamehameha to no effect, Frieza starts pummeling Goku, but Goku remembers his Spirit Bomb ability and decides to gather energy, leaving himself open. Piccolo (who had been resurrected and was transported to Namek to help), Gohan and Krillin attempt to distract Frieza from Goku so he can gather the energy. Finally, with all his might, Goku launches the attack, which hits a struggling Frieza, and seemingly destroys him, along with a good portion of Namek in a devastating explosion. Worn out, Goku begins to laugh, along with his friends, who believe Frieza has been defeated. But even the Large Spirit Bomb fails to kill Frieza. However, when Frieza kills Krillin and critically injures Piccolo, Goku, in anger, taps into his inner power reserves and transforms into a Super Saiyan.
After ordering Gohan to escape Namek with Piccolo and Bulma, Goku battles Frieza again and, at first, easily outmatches him with his newfound power. Goku then taunts Frieza into going to 100%, saying how due to the damage sustained in his 70% form, he won't be able to hold onto his full power for long. After Frieza attempts to destroy Namek, Frieza finally goes to 100% power. At first, it seems that Frieza has outmatched Goku, but then Frieza is shocked to hear that Goku was holding back and was relieved that that wasn't his full power. As time goes on, Frieza begins to lose his stamina and his power level drops like a stone. Goku then states he no longer wishes to fight Frieza because he says it is pointless. Goku then flies off and lets the space tyrant go. In desperation and frustration, Frieza uses his Death Saucer attack, creating two pink Destructo Discs and throwing them at Goku. Goku moves too quickly for the attack and maneuvers himself so that Frieza is in between him and the disks. Goku yells a warning to Frieza, but Frieza is too slow and is cut in half, losing an arm in addition to his legs. The weak tyrant begs Goku to help him. Goku, believing that Frieza does not deserve to be forgiven or spared, gives him some of his energy as a show of mercy. Bitter at his defeat, Frieza uses it to launch a powerful energy wave at Goku. Goku notices the blast and fires an Angry Kamehameha at Frieza, defeating him.
Goku then flies to Frieza's spaceship and presses buttons to try to cause the ship to fly, however, it does not work and Frieza's spaceship falls into the lava.
Frieza-Androids Interlude
Trunks Saga Goku began to panic but caught a glimpse of one of the Ginyu Force space pods and quickly escapes Namek, before it explodes. The pod takes Goku to Planet Yardrat, which was going to be the Ginyu Force's next target. His friends, who were teleported to Earth by a wish made with the Namekian Dragon Balls, believe him to be dead. However, months later, when they attempt to revive Goku and Krillin by warping them to the check-in station, they learn that Goku is alive. When they decide to transport him back to Earth, he declines, stating that he'll return later. While on Yardrat, Goku learns a new technique called the Instant Transmission.
Future Trunks tests Goku's might
Two years later, Goku returns to Earth where he is confronted by Trunks, the half-Saiyan son of Vegeta and Bulma from the future. The teenage Super Saiyan had just killed both Mecha-Frieza and his father King Cold a few moments before Goku's arrival. Trunks then tests Goku's Super Saiyan strength in battle by assaulting him furiously with his sword, which Goku knocks away multiple times with one finger (albeit charged with energy), claiming that he knew Trunks would not use his full power.
Satisfied, Trunks gives Goku medicine for a heart virus that he will contract in one or two years, telling him to use it when he starts feeling the virus' effects. Future Trunks also warns him about two androids that will threaten the Earth in three years. Goku, Gohan and Piccolo then spend the next three years training for this new threat. However, Future Trunks' visit somehow alters the onset of the virus, so it does not manifest during those three years (six months prior to the Androids arrival). Seeing no point in using the medicine when nothing appears to be wrong with him, Goku stopped taking it.
Androids Saga
Three years later, two androids, Dr. Gero (as Android 20) and Android 19, appear and attack a city. The Z Fighters confront them, and Yamcha is first to be attacked, having been impaled by Dr. Gero's hand and having his energy stolen. However, he is saved by the use of a Senzu Bean, and the Z Fighters lead the two killing machines out of the city to fight. Despite being a Super Saiyan, Goku is bested by Android 19 when he begins to drastically weaken from the heart disease he was warned of, which starts manifesting itself during the fight. However, Vegeta, who now is a Super Saiyan as well, manages to save Goku before he can be defeated by the androids, and, after toying with it for a bit, destroys Android 19 with ease, enjoying the battle greatly. Yamcha takes Goku to Chi-Chi to get the medicine that will save his life from the killer virus. Meanwhile, the rest of the Z Fighters learn from Trunks, who has returned to help them fight the androids, that history had somehow been altered, and that the androids of his time, Future Android 17 and Future Android 18, had not been the ones they were fighting. Soon after, Dr. Gero states he will unleash No.17 and No.18, and he flees from the battlefield. They try to stop Dr. Gero from activating them but fail. However, once Dr. Gero activates 17 and 18, they are revealed to be unruly and kill him, and activate another android, Android 16, as well, who was solely created to be Goku's assassin.
Cell Saga
While the Z-Fighters try and fail to stop the androids, Piccolo (who had recently fused with Kami) discovers a new threat named Cell, a large biological life form created by Dr. Gero, made with DNA taken from Goku, his allies, and foes they fought in the past. Cell was designed to absorb Androids 17 and 18 in order to achieve a perfect state, kill Goku, and conquer the cosmos. Cell hunts down the androids and absorbs Android 17, transforming into his second stage. Meanwhile, Goku heals from his sickness and takes Gohan, Vegeta, and Future Trunks to the Hyperbolic Time Chamber at Kami's Lookout to obtain a year of training in one day under heavy gravity and incredibly volatile temperatures. Vegeta and Future Trunks go in first and while Goku and Gohan enter the Time Chamber next.
When Cell was preparing to finish Tien after he helped Android 18 escape, Goku intervenes by teleporting to their location using Instant Transmission, meeting Cell for the first time. Goku orders Cell to stay away from his friend while Cell casually greets him as the Saiyan informs Cell that while he is not strong enough yet, he will fight him in one day and win. Cell laughs at this supposed cowardice, before Goku senses Piccolo survived Cell's attack and teleports him and Tien near the sea. Goku grabs the unconscious Piccolo and makes plans to leave, before Cell who eagerly wants to fight Goku, states that they will not fight another day, but now, and flies towards him. Cell prepares to attack, though Goku uses Instant Transmission again, whisking the unconscious Tien and a barely alive Piccolo back to safety at The Lookout before Cell's punch lands. Once at the Lookout, Goku gives his friends senzu beans for them to heal. Soon Vegeta and Trunks emerge, going off to find and fight Cell.
Goku and Gohan enter the chamber, where Goku helps his son obtain Super Saiyan, having realized half-saiyan hybrids like Trunks can transform. Much later, Goku gets to Super Saiyan Third Grade and Gohan believes that Goku can beat Cell with this power, however Goku explains that his speed has decreased in that form and the power to keep the form is too much. Goku realizes that it would be easier to master Super Saiyan to avoid stress on their body and be use to the power. During this training, Goku notices that the potential Gohan has can easily surpass Goku's own powers, especially after Gohan managed during their training to transform into an unprecedented Super Saiyan level before losing consciousness during a training session, and that, if he cannot kill Cell, Gohan will.
While Goku trains, Cell absorbs Android 18 and reaches his perfect form thanks to Vegeta's interests to fight Cell in his perfect form. Vegeta was easily defeated when he challenged Cell, as did Trunks, who failed because his new Super Saiyan Third Grade form had too much muscle mass to hit Cell quick enough, a flaw Goku noticed in the chamber. After Goku and Gohan finish their training, Cell announces that he will be holding the Cell Games in ten more days, in order to give a chance to anyone who wants to challenge him.
For ten days, Goku and Gohan stay on Earth to train and relax while maintaining their Super Saiyan form the entire time. Goku also uses this time to travel to New Namek to ask Dende to be the new guardian of Earth, as Piccolo had fused with Kami in an attempt to stop Cell, and the fusion had made the Dragon Balls useless. After Dende creates new Dragon Balls based on the old ones, Goku searches for those reactivated Dragon Balls in order to use them after they defeat Cell to correct everything Cell had put wrong.
After ten days have passed, the Z Fighters head to the Cell Games. After the supposed strongest person on Earth, Mr. Satan, is easily defeated, Goku offers to be the first Z Fighter to fight Cell, believing that he is no match for the villain in order to truly test Cell's abilities. Goku finds himself almost equally matched but still at a disadvantage against a heavily suppressed Perfect Cell in every way, and cannot seem to gain the upper hand after many attempts. Even after trying the Instant Kamehameha (a combination of the Instant Transmission and Kamehameha), which destroys Perfect Cell's upper half, he watches in horror as the android regenerates easily, thanks to Piccolo's cells in his body. After getting tired and worn out, Goku decides to give up and leave the battle to Gohan, whom he is convinced has the hidden power necessary to defeat Cell. Gohan then states that Goku had been holding back, only to learn he had not, leading to the conclusion that Gohan may be stronger than Goku, who was fighting at full power. Gohan then powers up to a point where his energy eclipses even Goku's, and fights with Cell, but halfheartedly. After Gohan tells Cell that when he gets angry he gets much stronger, Cell starts to get curious and tries to force Gohan's inner powers out of him by making his children, the Cell Jrs, attack Gohan's friends and his father. All the Z fighters cannot beat the Cell Jrs, including Goku, who was worn out from his battle with Cell. After Android 16 attempted self-destruct on Cell, who blasted him, 16 asks Mr. Satan to bring him (his remaining Android head) to Gohan, and he then tries to convince Gohan that fighting is sometimes needed. When Cell destroys Android 16's head, this triggers a change in Gohan, forcing him to ascend to Super Saiyan 2, a form in which he greatly surpasses Perfect Cell, even after the behemoth decides to unleash his earth-shattering Full Power and a further powered up Power Weighted form, which Gohan easily overcomes to the point of forcing him to regurgitate Android 18 because of the damage he has sustained.
When a beaten Cell tries to destroy the Earth as a last resort, Goku is forced to step in with his "Instant Transmission" technique when Cell is about to trigger his self-destruction. He teleports them both to King Kai's Planet, where he is killed by the explosion Cell caused, along with King Kai and his pets Bubbles and Gregory. However, Cell reconstructs himself as Super Perfect Cell, a trick even Cell himself did not know he had and uses the recently learned Instant Transmission to go back to Earth. Goku then motivates Gohan from the Other World to help fuel Gohan's Kamehameha wave against the reconstructed Super Perfect Cell, which, after a lengthy beam lock, successfully obliterates him. After Cell's defeat, Goku insists that he should stay dead, even though they could resurrect him, because he has attracted too many problems to Earth, like Frieza and the Red Ribbon Androids. Goku decides it will be safer for Earth if he does not return, and Earth has Gohan to protect it if needed.
Great Saiyaman Saga
During a filler portion only seen within the anime, Goku is shown on Snake Way with King Kai, Bubbles, and Gregory after the battle with Cell left the great king without his planet. King Kai insists they head to the Grand Kai's Planet to go see the Grand Kai and enter the Other World Tournament. The winner would be trained personally by the mighty Grand Kai himself. When they arrive, they confront King Kai's rival, the West Kai, accompanied by his strongest fighter, Pikkon. Grand Kai instructs Pikkon to travel to Hell and stop Cell, Frieza, King Cold, and the Ginyu Force from causing havoc. Goku accompanies Pikkon to the fight and takes down the Ginyu Force, only to be astonished when Pikkon takes down Cell with ease, and proceeds to fell Frieza and King Cold with one blow. Upon his return to King Kai, Goku is welcomed by many of King Kai's powerful warriors, such as Olibu, who was once the hero of Earth. During the Tournament, Goku easily makes his way through the tournament by defeating Caterpy of the South Kai, Arqua of the East Kai, and Maraikoh of the West Kai. Goku then faces off with Pikkon in the finals. After a long fight, they are both disqualified on a technicality, but the Grand Kai allows them both to train under him. Over the next seven years, while Goku is training in Other World he achieves Super Saiyan 2 and Super Saiyan 3, the latter of which boosts his power even beyond his already powerful Super Saiyan 2, but delivers an excruciating strain and immeasurable ki consumption.
Seven years later, Goku is given special permission to return to Earth for one day to participate in the 25th World Martial Arts Tournament, which he knows Gohan, Vegeta, Trunks, and his youngest son Goten, will be attending. Upon his return he meets his second child, Goten, who had been born after his death in the Cell Games, and Videl, Gohan's girlfriend from his high school who is the daughter of Mr. Satan, the fraud who received the credit for saving the world from Cell.
World Tournament Saga
Goku was going to be set up against Vegeta in the 6th match, finally able to settle their rivalry, but had to be postponed because Videl was beaten badly by the supposed weakling Spopovich, who, along with Yamu, is controlled by the evil wizard Babidi. While Gohan is matched up against Kibito (the assistant of Shin, who was in the tournament as well), Spopovich and Yamu both steal Gohan's Super Saiyan 2 energy and left the tournament while all the Z Fighters in the tournament ditched the tournament to follow them to Babidi.
Shin and Kibito introduced themselves and informed the Z Fighters about the plans of Babidi who wishes to bring destruction and terror across the whole universe by bringing back his extremely evil monster puppet by the name of Majin Buu. The Z Warriors follow Spopovich to Babidi's ship where they are ambushed by Dabura, the powerful ruler of the Demon Realm, who kills Kibito and turns Krillin and Piccolo to stone. Goku, Gohan, Vegeta and Shin enter Babidi's ship and they take turns defeating each of his minions on each room of the ship, their power leaving Shin in awe. Goku fights Yakon who absorbs his energy, but Goku kills him by overpowering and exploding him. While Gohan is against Dabura, Vegeta complains that he can do better. When Babidi hears that, he possesses Vegeta through the evil in his heart and turns him into Majin Vegeta making him evil once again. They are transported back to the tournament, where Vegeta blows up part of the stadium, killing many people, to force Goku into a fight. Albeit reluctantly, Goku agrees. Goku and Vegeta are both transported to a deserted landscape for them to settle their battle, while Gohan and Shin continue on to stop Babidi.
Goku and Majin Vegeta have an earth-shattering battle which gives more than enough energy for Majin Buu's awakening. Although they are evenly matched at Super Saiyan 2, Goku is not surprised Vegeta has pushed his limits in training over the past seven years. However Goku is horrified when Vegeta admits he allowed Babidi to take control of him so he can reawaken the evil in him and defeat Goku, who condemns Vegeta for using this as an excuse for betraying his family.
Main article: Majin Buu Saga The battle between Goku and Vegeta abruptly ends when Goku senses that Majin Buu has been released and pleads with Vegeta to help him defeat Majin Buu. Vegeta refuses to listen, even when told Majin Buu will kill his family, but Goku punches him down for bluffing. In a false show of agreement, Vegeta knocks Goku out from behind while he is getting a Senzu Bean out of a bag. Vegeta then eats the only Senzu Bean left and flies off to face Majin Buu alone.
Upon awakening, Goku could sense neither Vegeta nor Gohan anywhere and comes to the conclusion that they have been killed in the battle (when actually Gohan was narrowly saved by the badly injured Supreme Kai, and only Vegeta died in a vain attempt to try and eradicate Majin Buu). He heads to Kami's Lookout and is healed by Dende, who confirms that Vegeta sacrificed himself in an attempt to destroy Majin Buu. After transporting everyone to the Lookout, he tells the bad news to them. With the little time he has left on Earth, with the help of Piccolo, he decides to teach Trunks and Goten the Fusion Dance, which he learned from Metamorans while in Other World, so they may form one immensely powerful being that might stand a chance against Majin Buu.
After finding out that the Dragon Radar is still in West City and Majin Buu is about to cause more destruction, Goku decides to distract him while allowing Trunks to head into West City and retrieve the Dragon Radar before it is destroyed along with everything else in West City by Majin Buu, otherwise they will never be able to find the Dragon Balls. Goku teleports to Majin Buu's location, and shows him and everyone (via Babidi's telepathy) the incredible power of the new Super Saiyan 3 form, whose energy could be sensed all the way to Supreme Kai's planet. Goku then engages in a fight with Majin Buu, whom he overpowers blow for blow. Amazingly, Majin Buu is still having a good time and enjoying the fight, even forcing Goku to narrowly deflect an imitated version of his own Kamehameha wave, which chips over a tenth of the Earth. He later states, that he probably could have won, but that he wanted to leave it in the hands of Gohan, Trunks, and Goten because he will not be there forever, and that they need to have a shot at saving the universe instead of a dead fighter. Unfortunately, the action of sustaining Super Saiyan 3 to briefly fight with Buu shortens Goku's time on Earth and he is forced to return to the Other World.
Once Goku has returned to Other World, he learns that his son, Gohan, is not dead, but in fact training with Shin on the Kai Planet teleporting there only to just miss having his head removed by Gohan practicing with The Z Sword. Gohan has been training with the legendary Z Sword, and to test its strength, Shin summons a block of the densest metal in the universe, Kachin, as testing material. Goku throws the cube at Gohan, expecting the Z Sword to slice the block in half. Instead, the sword snaps in half and from it emerges Old Kai, who tells them that he will fully unlock Gohan's potential with a ritual.
Through a Crystal Ball, Goku watches the fight between Super Saiyan 3 Gotenks and Super Buu with much anticipation, amazed that the two boys who, alone, could only access the Super Saiyan state achieved Super Saiyan 3 so quickly when fused. As Gotenks is about to finish Super Buu after a lengthy battle, he reverts to his base form and quickly defuses. Gohan (after having his hidden power released) then arrives, effortlessly thrashing Buu with his newfound powers, but Super Buu escapes by self-destructing until Goten and Trunks can fuse again an hour later, and he then absorbs Gotenks and Piccolo, gaining the upper hand. When Gohan fails due to Super Buu's stolen powers, Old Kai gives his life to Goku so that he may return to Earth to help Gohan.
Goku is also given Potara Earrings so that he can fuse with Gohan in order to create an unmatched warrior that would easily destroy Buu without even the need to transform according to Old Kai. When Goku arrives on the battlefield, much to the surprise of Gohan and Super Buu, he cuts Super Buu in half with a Destructo Disc and tosses one of the earrings to Gohan. Gohan misses for the grab, and Goku tells Gohan to hurry and find the earring. He stalls Super Buu, fighting as a Super Saiyan 3. After the fight, Gotenks defuses inside Super Buu, and his power drops to almost 1/3 of his original power. Goku states that he is not much of a threat anymore and realizes that they can beat Super Buu easily. However, Gohan is absorbed when Super Buu catches him off-guard. At this moment of despair, the newly resurrected Vegeta appears and Goku asks him to fuse with him. Vegeta refuses and the two briefly battle Super Buu but fail miserably. Goku then tells Vegeta that their families and friends have been killed and begs for Vegeta to put their differences aside so they can save the Earth.
Vegeta finally agrees and the two of the most powerful remaining Saiyans fuse to become Vegito. Vegito then easily thrashes Super Buu, even with Gohan absorbed. Super Buu tries every technique and attack he has got against the fused Saiyans, but Vegito manages to dodge by all of them without much trouble. After a lengthy fight, the mighty Vegito wins easily. However, supposedly due to Vegeta's arrogance in not simply finishing Buu off, Vegito is eventually absorbed by Super Buu, with a Saiyan Shield protecting him. However, it is later revealed that he chose to be absorbed on purpose because he wanted to rescue his friends and family before killing Super Buu.
Inside Buu, Vegito automatically separates into the two Saiyans supposedly due to the properties of Super Buu's digestive system (their time limit ran out, at this point they believed the fusion was permanent). While in the stomach, Goku is attacked by enzymes that quickly cover his body, making him sticky and burning him in pain. While Goku struggle to get enzymes off, a roundworm shows up. Goku is almost eaten by the roundworm until he finally blasts the enzymes off his body. After traveling through Super Buu's body, Goku and Vegeta reach Super Buu's brain where they find Gohan, Trunks, Goten, and Piccolo, unconscious but still alive. After freeing them and having to fight Super Buu inside his own body, Vegeta decides to remove the unconscious fat Majin Buu from Super Buu. Despite pleas from Super Buu, Vegeta pulls the fat Majin Buu free and Super Buu undergoes another transformation. Goku and Vegeta then escape from Super Buu's body with the newly rescued Z Fighters. Super Buu then transforms back to his original form, Kid Buu.
Outside, Goku rescues Mr. Satan, his dog Bee, and Dende, but fails in saving Gohan, Goten, Trunks, and Piccolo before the newly transformed Kid Buu destroys the Earth in an extreme show of power (Vegeta previously stopped him from doing this with a much smaller blast that could still take out the planet, but he then charged a huge ball they could not deflect in response). Kibito Kai teleports in and saves Vegeta, Goku, Dende, and Mr. Satan by bringing them to the Sacred World of the Kai. After regenerating, Kid Buu sets out to find Goku and Vegeta by copying Kibito Kai's instantaneous movement technique (in the manga original, he teleports to Goku's location instantly).
When Kid Buu finds them, Vegeta and Goku have a Rock-Paper-Scissors match to see who fights first. Goku wins and fights Buu. In the Anime, he starts the fight as a Super Saiyan 2, but eventually transforms into Super Saiyan 3. When he is a Super Saiyan 3, he fights evenly with Kid Buu for a short time, taking the advantage often. However, Goku had failed to account for the strain that fighting in a living body would have on him, and soon becomes exhausted. He attempts to gather up his strength while Vegeta distracts Buu in his Super Saiyan 2 form (getting mercilessly beaten in the process), but his Super Saiyan 3 transformation drains him of his energy reserves and he soon loses the ability to maintain the form. At Vegeta's suggestion, Goku begins gathering energy for a Super Spirit Bomb that would employ all the available energies of the Earth and its occupants (he does this to have the Earth "save itself for once").
Using King Kai's telepathy, Vegeta speaks to the newly revived people of Earth and begs for everyone to donate power to Goku's Spirit Bomb, which they are hesitant to do. Everyone on New Namek and the Other World gives energy for the Super Spirit Bomb and possibly many other planets as well, along with Goku's close friends. Meanwhile, Fat Majin Buu, while trying to hold off Kid Buu, falls in battle leaving a battered Vegeta to protect Goku while he forms the Super Spirit Bomb. Eventually, Mr. Satan finally convinces everyone on the newly regenerated Earth to give Goku all the energy he needs to destroy Kid Buu once and for all. With the contribution of power from Earth, Goku launches the Super Spirit Bomb. But as impossible as it seems, Kid Buu actually stops the Spirit Bomb and slowly begins to push it back at Goku. Vegeta realizes Goku used the rest of his power to gather and form the bomb and has nothing left to defeat Buu.
Using the last wish from the Namekian Dragon (the first two were spent restoring Earth to its normal condition and then reviving all those who died since Babidi's arrival except the evil ones), Dende wishes for Goku's full power to be restored. With his power restored, Goku powers up the Super Spirit Bomb even more, transforms into a Super Saiyan and stops Kid Buu's forward progress and the Super Spirit Bomb comes back to Kid Buu. After several moments reflecting over the events that led to this moment, Goku makes one last wish to himself, that Kid Buu be reborn as a good being so they can fight again one day. With the blessing of Earth's residents, Goku destroys Kid Buu. After Dende heals Goku and Vegeta, they find Majin Buu still alive. Vegeta attempts to finish him off but Goku convinces Vegeta to spare him. They are then teleported back to Earth and rejoice with their families, with Goku announcing he has come back to life again.
Six months after the defeat of Kid Buu, Goku summons Shenron to erase Majin Buu from the Earthlings' minds. Later, Goku shows up late to Bulma's party due to him watching over dinosaur eggs.
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