master roshi is a major character in the manga and anime "dragon ball" created by akira toriyama. he is a old hermit who lives on a island in the kame house who will be the teacher of goku, krillin and yamcha. he is the man who developed he kamehameha technique. one of his quirks is having nosebleeds when he sees beautiful girls (like bulma). during the world martial arts tournaments he adoptes the identity of jackie chun.