Uub is a child introduced during the World Tournament following Goku's defeat of Majin Buu. After Buu's death, Goku wished for his reincarnation as a good person so they could battle again. Uub is the result of this wish, which explains his name (Buu spelled backwards is Uub). Goku decides to train Uub at the end of Z, and GT begins with the completion of that training. Uub grows up to be a young warrior and farmer. He possesses his specific powers because he was created from Buu. Later, Uub fuses with the original Majin Buu. This transformation does not significantly alter his appearance, but it boosts his power to nearly match Bebi's. He subsequently fights Super #17 and then the evil dragons.
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