goku is a full saiyan and was born on planet vegeta his home planet.goku's father is bardock no one knows who goku's mom is. as a kid goku was looking for the seven dragonballs he succeded.goku finnaly turned super saiyan for the first time and then succeded the forms super saiyan 2 and 3. goku did fusion with vegeta and turned into gogeta. in dragonball gt goku is turned into a child and is raised by his wife chi-chi. in dragonball gt goku manages to turn into super saiyan 1,2,3 and 4 and can also turn into fusion gogeta super saiyan 4. goku dies a tradgic death and is never revived.

goku's wife chi-chi

160px-GT Goku SSJ

goku in gt