goku is an usually happy saiyan that is serious when fighting someone evil, he is married to Chi-Chi and is friends with: bulma, vageta (another saiyan), yamcha, puar, oolong, (add anyone else, im lazy). gokus transformations include: super Saiyan, super Saiyan two, super Saiyan three, super Saiyan god, super Saiyan blue, and ultra instinct, (you are vageta) vageta call goku by his Saiyan name: kakarot, though, no matter what, goku refurrs to himself as goku