Majin Buu
Majin Buu is the final and most powerful villian in DBZ.He is a demon created from magic by Bibide.Buu was sealed away by Bibide due to how uncontrollable he was. In the final chapter of DBZ, Babade and Dabura gather enough energy to resurrect him. Buu was responsible for the death of almost every Earthling, and destroys the Earth itself. During the Buu Saga, he undergoes six transformation that occured for reasons such as absorbtion and removal of good and evil from within.Untrusting, the entire Earth didn't donate thier energy to Goku until Mr Satan screamed for them to. With the energy, Goku created a huge Genki Dama( Spirit Bomb).With it, Goku finally killed Buu.
