Vegeta realized
that he could become stronger if he was possessed by Babidi. He
decided that he would allow Babidi to control him. During the battle
between Gohan and Darbura, Babidi possessed Vegeta. Goku and Vegeta
were transferred elsewhere to fight. Babidi acquired enough energy and
revived Buu (Fat Buu). The fat monster defeated Gohan and Kaioshin
after killing Darbura. Vegeta knocked Goku unconscious and flew off to
fight against Buu alone. He self-destructed but Buu managed to
survive. When Goku woke up he went head on with Buu. He transformed
into Super Saiyan 3 but he still can't
defeat Fat Buu since he couldn't
maintain his pose for too long on Earth. Gohan traveled to Kaioshin's
Planet for training. Before Goku's
time was up on Earth he taught Goten and Trunks the Fusion technique.
The kids were then trained by Piccolo until they were strong enough to
defeat Fat Buu. Soon after, Goten and Trunks fused together and became
Gotenks (who can also transform into Super Saiyan 3 just like Goku
can).
Fat Buu killed
Babidi because he found him annoying. Next he met Mr. Satan who was
supposedly sent to assassinate him. Instead of assassination, Mr.
Satan developed a friendship with Buu. During this time, Buu was
slowly converted to a "good
guy".
Piccolo realized this and believed that fighting wasn't
as necessary as he had thought it would have been. Unfortunately Buu's
evil spirit escaped. Both Fat Buu and Evil Buu began to battle. Evil
Buu turned out as the victor and absorbed Fat Buu thus turning into
Super Buu. He went to Kami Sama's
Palace and demanded to fight against Gotenks (Goten and Trunks) and
Piccolo in order to fulfill his promise with Goku.
Back on Kaioshin's
Planet, Rou Kaioshin was released from the Zet Sword and he agreed to
power up Gohan only if he could touch Bulma. Gohan was sent back to
Earth so he could fight against Buu. Gohan overwhelmed Buu so Buu
escaped. He returned and absorbed Gotenks and Piccolo thus turning
more powerful . Rou Kaioshin gave his life to Goku and offered him a
pair of Potara Rings so that he could fuse with Gohan to defeat the
newly powered-up Super Buu. Goku teleported to the battle when Enma
Kaio (King
Yama) gave Vegeta back his body so he could be sent to fight against
Buu. When Goku arrived at the scene he told Gohan to put on the Potara
Ring. He threw the ring at Gohan but Gohan didn't
manage to catch it. While he was searching for the ring, Buu absorbed
him when he wasn't
noticing and became a lot more powerful.
When all hope was
lost, Goku sensed Vegeta's
arrival. After an argument they decided to fuse and they became
Vegetto. Vegetto overpowered Buu but purposely allowed himself to be
absorbed by Buu so that he could rescue his friends who were
trapped inside Buu's
body. When Vegetto was inside Buu's
body, the permanent fusion somehow wore off. They rescued the 4 heroes
(Gohan, Piccolo, Trunks and Goten). Buu realized what was happening
and took his consciousness inside to his body. Vegeta detached Fat Buu
from Buu's
organs and Super Buu transformed back into Kid Buu, the original Majin
Buu.
Goku and Vegeta
escaped from Buu's
body and when they came out Kid Buu destroyed the Earth. Goku only
managed to save Mr. Satan, Bee and Dende. Kaioshin appeared and
teleported them back to his planet. Vegeta became very angry because
Goku rescued Mr. Satan and a dog instead of his son and the other
warriors. Goku was speechless but there wasn't
any time for that. Majin Buu also teleported to the planet and was
prepared to kill them all. Kaioshin, Rou Kaioshin and Dende teleported
to a faraway planet, however, they forgot about Mr. Satan and his dog
and left them behind on the battlefield. Goku was badly wounded from
the fight so Vegeta jumped into battle to give Goku some time to
recover. Vegeta proved to be no match and he was almost killed. Mr.
Satan stepped into the scene and challenged Buu (he thought he was
dreaming so he believed he would win no matter how much stronger Buu
was). Buu was unable to attack Mr. Satan due to Fat Buu's
influence inside his body. He released Fat Buu and as he was about to
kill Mr. Satan, Fat Buu awakened and goes head on with Kid Buu. Kid
Buu proved to be stronger.
Goku used this
time to create a Genki Dama. The Namek Dragon Balls were gathered to
restore the Earth and also to revive every good person who was killed
by Buu. Vegeta was amazed that his life was also restored since he
never thought of himself as a good person. Goku had now gathered
enough energy so he hurled the Genki Dama towards Buu but Buu repelled
the Ki back at Goku. Vegeta told Dende to use the Dragon Balls and
restore Goku's
strength. Dende did so and Goku had all his strength restored. Goku
threw the Genki Dama back at Buu and killed him. Fat Buu joined the Z
Warriors when he awoke.
All the Earthling's
memory of Majin Buu were erased by Porunga so that Fat Buu could live
on Earth with Mr. Satan. At the end of the series, Gohan married Videl
and they had a daughter named Pan. Vegeta and Bulma had another child,
a daughter named Bra. Majin Buu was reincarnated into Ubuu and trained
with Goku in Kami Sama's
Palace.