Ox King

Ox King (牛魔王) is the king of Fire Mountain, and the father of Chi-Chi. He is also the Father in law of Son Goku. He is the grandfather of Son Gohan, and Son Goten. Including the great grandfather of Pan. He once trained with Goku's adopted grandfather, Grandpa Son Gohan, under Master Roshi at the Turtle School. In the Japanese version, he is called Gyumao-sama.