As his alternate timeline counterpart, Future Majin Buu is also resurrected by the energy of the battle between Majin Vegeta and Goku. Vegeta confronts Buu, but Future Majin Buu defeats him. Future Babidi tries to send in Future Buu, but Future Buu refuses to listen to Future Babidi. When Future Babibi sees that he has been killed by Buu in Piccolo's memories and remembers seeing Namekian Dragon Balls in Piccolo's mind, Future Babidi leaves Future Buu in Future Dabura's care and goes off to New Namek to use the Dragon Balls of New Namek to place Future Majin Buu under his control in order to change his fate.
Future Buu later meets Future Mr. Satan. Mr. Satan gives Future Majin Buu a pebble for present, and they start playing together, however Future Dabura sees Future Buu playing with Future Mr. Satan, and he launches an attack at Future Mr. Satan. This causes Future Majin Buu to become more enraged than he has ever been, he mists coalesced and form a new Buu. The new, thin Buu turns the tables and turns the fat Buu into chocolate. He eats him, and changes into a new and far more powerful form, Future Super Buu.
After Future Mr. Satan prevents Future Babidi from doing his wish, he is attacked by Super Buu, but Future Majin is spat out by the Future Super Buu's body and saves Mr. Satan, having befriended Mr. Satan earlier. Majin Buu then helps the Z Fighters to fight against the Super Buu's copies.