On planet Tuffle, Goku looks back at Earth in the sky. The light from Earth helps Goku become a great ape. He calms down after a while and begins to shrink back into his normal size. He then starts transforming, He looks different, having long, black, spiky hair, red fur that covers his chest and arms, and his saiyan tail is now red aswell. His pupils become a bright yellow and the outlines of his eyes are red. His energy explodes as he fully transforms.

Goku: “This is Super Saiyan… 4.”