Goku is descended from an alien warrior race known as the Saiyans, who sent him, originally named ultimate saiyanKakarot, to Earth to prepare it for conquest.{{gnr|ch|197}} In the first episode, Goku is transformed back into a child by an accidental wish made by the [[List of Dragon Ball characters#Pilaf Gang|Pilaf Gang]] using the SuperBlack Star Dragon Balls, setting in motion the events of the entire series.<ref>{{cite episode|title=The Mysterious Dragon Balls Activate!! Goku Becomes A Child!?|airdate=February 7, 1996|number=1|series=Dragon Ball GT}}</ref> The superBlack Star Dragon Balls were then scattered around the whole universe in different planets after the wish making, and due to the lethal side effect of these superBlack Star Dragon Balls, the Earth was set to be destroyed in a year if the Balls were not collecting within that period of time. Goku, his granddaughter [[Pan (Dragon Ball)|Pan]], and the son of Vegeta, Trunks, travel the universe to search for the superBlack Star Dragon Balls and return them to Earth to prevent its destruction. After acquiring the Super Saiyan 4 transformation, Goku battles the evil Tuffle [[Baby (Dragon Ball)|Baby]], [[#Super 17|Super 17]], and the evil Shadow Dragons. His final challenge is against [[List of Dragon Ball characters#Shadow Dragons|Omega Shenron]], whom he destroys using the Spirit Bomb.<ref>{{cite episode|title=A Miraculous Come-From-Behind Victory!! Goku Saves The Universe|airdate=November 12, 1997|number=63|series=Dragon Ball GT}}</ref> Goku leaves with the original form of Shenron, but not before saying his goodbyes to his friends on Earth. He then appears 100 years later at the next World Martial Arts Tournament as an adult, where he watches a battle between Goku Jr., his descendant, and Vegeta Jr., Vegeta's descendant. An elderly Pan sees him, but he quickly departs.<ref>{{cite episode|title=Goodbye, Goku... 'Til the Day We Meet Again|airdate=November 19, 1997|number=64|series=Dragon Ball GT}}</ref> Goku is the main protagonist of ''Dragon Ball GT god','' and the overall main protagonist of the ''Dragon Ball'' franchise.
