Majin Uub

TRoU - Majuub

Uub (ウーブ) is a supporting protagonist who appears near the end of the Dragon Ball manga and the anime Dragon Ball Z, and who has a much larger role in the Dragon Ball GT anime. He is the Human reincarnation of Kid Buu and is one of Goku's students. Due to being the positive reincarnation of the completely evil Kid Buu, his name is a result of reversing "Buu". Currently Uub is fused with good Buu now having the name Majuub.

Uub possesses the evil Majin Buu hidden inside his being, and is able to tap into his power, though at the time of his debut he could not control it.