Master Roshi (武天老師, Muten Rōshi), also known as the Turtle Hermit (亀仙人, Kamesen'nin), is a supporting protagonist in the Dragon Ball manga, and makes appearances in Dragon Ball Z and Dragon Ball GT. He is an ancient and wise martial arts master, and the first character to wield the trademark Kamehameha. Though he seems frail, Roshi is actually a mighty warrior. He trained Grandpa Gohan, Ox-King, Goku, Krillin, and Yamcha. Master Roshi is both the archetypical wise old man and a perverted old man, the latter being typical of shōnen manga. Sometimes, he gets cranky, which further provides comic relief. His companions are usually Oolong, Turtle, and Launch. His home is Kame House, a shack on a small isolated island which serves as a gathering place for the his friends.