Dragon Ball GT
Five years after the end of the Dragon Ball Z anime, Goku is turned back into a child by the Black Star Dragon Balls used by his old enemy Emperor Pilaf and is forced to travel across the universe to retrieve them along with his granddaughter Pan and Trunks. The trio go through various adventures in their journey to find the Black Star Dragon Balls, until they encounter the evil artificial Tuffle, Baby, who intends to destroy the Saiyan race.