Ox-King (牛魔王 Gyūmaō) is the King of Fire Mountain and the father of Goku's wife, Chi-Chi. He once trained with Goku's adoptive grandfather Gohan under Master Roshi.
- "Hey! Your son Gohan is no longer a baby! Why, he's transcended Goku and he's become an honorable warrior. I know it's hard for you to accept, but both your husband and son are battling to save this entire planet! Without them, we're gone! Oh sure, I wish it was me instead of him, but Gohan is the only hope we have left! Come on, Chi-Chi, everything will be okay." — "The Unleashing"