28th Budoukai is the last of Dragon Ball Z. Near the beginning we are
introduced to Ubuu, who was fighting in the Elimination Rounds. Mr. Buu
comments to Goku that Ubuu is a talented fighter. For those who didn't
know: Ubuu is the reincarnation of Majin Buu - made possible by the Dragon
the tournament, Goku teases Ubuu and tries to make him angry. Goku's
true aim was to make Ubuu realise his inner powers and learn to use them. Goku
succeeded and decided to take Ubuu with him to train in Kami Sama's
Palace. They left and were both disqualified from the tournament.
turn up to the Semi Finals because he only wanted to fight against Goku, not
anyone else. In the end, Mr. Buu lets Mr. Satan win again and the two of
them go off eating chips and drinking coke after the presentations were held.