Here is an overview of the character, via Bandai Namco:
After an errant wish by Emperor Pilaf, Goku has been transformed into a child during the Dragon Ball GT series. This younger Goku packs a big punch with special attacks like the Super Kamehameha attack, transforming him into Super Saiyan 3. Goku is also able to use his Super Spirit Bomb, Power Pole, and Reverse Kamehameha to flatten the competition.
Dragon Ball FighterZ is available now for PlayStation 4, Xbox One, Switch, and PC.
Watch the official Goku (GT