Master Roshi (武天老師 Muten Rōshi), also known as the Turtle Hermit (亀仙人 Kamesen'nin), is an ancient and wise martial arts master and the first character to wield the trademark Kamehameha. Though he seems frail, he is a mighty warrior. Master Roshi trained Gohan, Ox-King, Goku, Krillin, and Yamcha. His home, named Kame House, is a shack on a small isolated island, serves as a gathering place for "his friends". He is both the archetypal wise old man and a dirty old man, the latter being typical of shōnen manga. Sometimes, he gets cranky, which further provides comic relief. He is bald, with a thick fu manchu, and a thick beard. Master Roshi wears beach clothes or a martial arts suit and a Turtle Shell on his back. He usually wields a walking stick. His companions are usually Oolong, Turtle, and Launch.