Son Goku is the main protagonist of the Dragon Ball metaseries. He is a Saiyan sent to Earth as a baby by his father Bardock to escape the destruction of the planet Vegeta and the Saiyan race. Adopted by Grandpa Gohan, he became a kind-hearted boy after he bumped his head, starting his great adventures. If he can't defeat his opponent, then Goku will transform into his forms. At first, it will be Super Saiyan 1, then 2, 3 and so goes on until the Mastered Ultra Instinct. 