Une vieille connaissance

The seeding draw for the tournament begins, and Goku has Majin Buu use his magic to rig it so that he faces the powerful mystery fighter he had talked about. In the first match, Pan faces Wild Tiger, and the four-year-old easily dispatches with him. Next up is Goku vs. Uub. Uub is the reincarnation of Buu. King Yemma apparently heard Goku's wish right before Buu was destroyed, and he reincarnated Buu as a good person, named Uub. Uub is apprehensive, so to bait him into fighting, Goku resorts to taunting the young boy. After a particularly nasty insult and a kick to the face, Uub has snapped, and is now ready to fight.

(Source : Kitsu.)