Grandpa Son Gohan is a vital supporting character in the Dragon Ball mythos, best known as the adoptive human grandfather and first martial arts mentor of Son Goku. A legendary martial artist in his own right, Gohan was the top student of Master Roshi alongside the Ox-King. He found an infant Goku near a crashed space pod in the woods of Mount Paozu, took him in, and gave him his name. Though Goku was initially aggressive due to his Saiyan nature, a severe head injury pacified the boy, allowing Grandpa Gohan to successfully raise him with strong moral values, survival skills, and basic manners.