Goku is the main character in DragonballZ. Goku's a Saiyan that was sent from the planet Vegeta. His programming was to destroy earth, but when discovered by a kind old man, who dropped him on his head, which destroyed his programming. Goku, Marries a girl named Chi Chi. Chi Chi decides to marry Goku because he saved her life. They have a son named Gohan. Goku becomes the World's Strongest Figeter.