Super Buu is the end result of Evil Buu eating the Good Buu turned into chocolate.This new Majin Buu has a tremendous increase in power and has an increased mental capacity. In this form, Buu has very little patience and has extremely dangerous fits of anger, even holding the power to rip through dimensional walls if he gets angry enough. He even killed all of the earthlings on Earth with a technique called: Human Extinction Attack and turned all of Goku's friends and family into chocolate, leaving only Goku, Vegeta, Piccolo, Gohan, Goten, Trunks, Mr. Satan, Bee, Dende, Kibito Kai, and Old Kai as the remaining survivors. Super Buu absorbed Gohan, Goten, Trunks, and Piccolo during the battle and Goku and Vegeta fused into Vegito in hopes of defeating the monster. Unfortunately, Buu absorbed them in his body and trapped them from within. Goku and Vegeta succeeded in finding the captives inside Buu's body, but when Vegeta freed the Good Buu, Super Buu began to go into the final phase of the transformation, turning him into the younger but evil version of Majin Buu.