Why did Bibidi seal Buu?


Bibidi sealed Buu away after Buu absorbed the Grand Supreme Kai. The
[Dragonball Wikia](http://dragonball.wikia.com/wiki/Majin_Buu#Pre-Dragon_Ball)
page for Majin Buu notes that he becomes easier to control after he absorbs
the Grand Supreme Kai:

> Of note, absorbing Grand Supreme Kai granted Majin Buu the ability to speak
> fluently, although he usually refers to himself in the third person. **Buu
> became calmer and easier to control** after absorbing the Grand Supreme Kai,
> and Bibidi then decided to seal him in a Sealed Ball.

Why would Buu need to be sealed up if he had become easier to control?




Bibidi did not seal Buu right away. When Kid Buu absorbed Grand Supreme Kai,
Buu's personality and behaviour pattern changes. Along with the ability to
speak, he brings out a childish innocence. Bibidi took advantage of this
innocence and brought Buu under his control.

From Wikia article on [Bibidi](http://dragonball.wikia.com/wiki/Bibidi):

> However, as Buu tends to become disobedient from time to time, Bibidi
> devises a Sealed Ball that can be used to temporarily trap the monster.
> Bibidi decides to reward Buu with sweets when he behaves himself and reseal
> him in the Magic Ball when he becomes disobedient. Bibidi also uses the Ball
> to control Buu while he is traveling to another world.

Since Grand Supreme Kai didn't completely take over Buu's personality, Buu's
original evil side sometimes gets the better of him, combined with his
childish nature. When that happens, Bibidi seals Majin Buu inside the Magic
Ball.

Therefore, most of the time, Buu is easy to control. But when his dark persona
along with his childish behaviour shows, he disobeys. Bibidi seals him away
only then, and also while travelling.




Bibidi did not seal Buu right away. When Kid Buu absorbed Grand Supreme Kai,
Buu's personality and behaviour pattern changes. Along with the ability to
speak, he brings out a childish innocence. Bibidi took advantage of this
innocence and brought Buu under his control.

From Wikia article on [Bibidi](http://dragonball.wikia.com/wiki/Bibidi):

> However, as Buu tends to become disobedient from time to time, Bibidi
> devises a Sealed Ball that can be used to temporarily trap the monster.
> Bibidi decides to reward Buu with sweets when he behaves himself and reseal
> him in the Magic Ball when he becomes disobedient. Bibidi also uses the Ball
> to control Buu while he is traveling to another world.

Since Grand Supreme Kai didn't completely take over Buu's personality, Buu's
original evil side sometimes gets the better of him, combined with his
childish nature. When that happens, Bibidi seals Majin Buu inside the Magic
Ball.

Therefore, most of the time, Buu is easy to control. But when his dark persona
along with his childish behaviour shows, he disobeys. Bibidi seals him away
only then, and also while travelling.

