Son goku, also known as Kakaroto, is the Son of Bardock. He is the brother of Raditz. Goku is a Saiya-jin who was sent to Earth as a baby to eventually grow up and destroy it. Goku, who is the first to reach Super Saiya-jin Power, is very strong. He has two sons, Gohan and Goten, who also eventually turn Super Saiya-jin. Son Goku, although a Saiya-jin, is a gentle and kind person. He will not kill someone if he can avoid it. He defeated Freeza and many other evils. Dduring the GT series, Gokou is turned back into a kid and searches out the Darkstar Dragonballs to turn himself back to normal.