Goten is a Saiyan/Human

Goten crying in the hands of his father

and is Goku and Chi Chi's second son. He is Gohan's younger brother as well as Trunks' best friend. Goten is not pushed as hard to study (unlike Gohan's childhood) instead he is able to be more carefree and play with his best friend Trunks, he is also trained by Chi Chi whenever Gohan is studying. Goten is the youngest Super Saiyan as well as the strongest warrior at his age