Majin Buu

Majin Buu is one of the most iconic characters from the anime "Dragon Ball Z," introduced during the Buu Saga. Initially appearing as an innocent, pudgy pink creature, his true nature is revealed to be much darker. Created by the wizard Bibbidi, Buu starts off as a malevolent force, but after merging with a kind god, he develops a more gentle personality. He befriends a human named Mr. Satan, yet his rage can transform him into a dangerous adversary. Buu has multiple forms, including "The Buu of Pure Evil" and "Super Buu," and his battles with heroes like Son Goku and Vegeta are central to the storyline.