The Legend of the Saiyans
Goku's next task in his training is to hit Gregory, a super fast grasshopper, with a heavy hammer. King Kai is amazed to see how quickly Goku can conquer the gravity and decides to teach him the ultimate techniques called 'Kaio-Ken' and 'Spirit Bomb'. One day, King Kai reveals more to Goku about his Saiyan heritage. Goku learns that the planet Vegeta had vanished and he is one of he only four Saiyans that survived. Goku will have to confront the rest of the surviving Siayans soon.