Master Roshi
Master Roshi is a twisted hermit and martial arts master known as the Turtle Hermit and God of Martial Arts. He dwells on his own remote island, Kame House, and may be willing to train students who come to him. He is also credited with inventing the Kamehameha Wave. Goku and Krillin were taught to battle by Master Roshi. In addition, he taught them his signature maneuver, the Kamehameha. This has become Goku's signature move, and other Z Fighters occasionally employ it. Master Roshi may not be seen much these days, but his teachings form the foundation for the majority of the Z Fighters' abilities.
Despite his lecherous habits and advanced age, Roshi is a well renowned and capable fighter who serves as Gohan, Ox-King, Goku, Krillin, and Yamcha's master. His desire to push his students to greater heights and to encourage them on their martial arts journeys makes him one of the series' most famous supporting characters.
Roshi loves his students so much that he entered the World Martial Arts Tournament as a martial artist named "Jackie Chun" to ensure they lost because he was afraid they would lose interest in the martial arts if they won too easily due to the great strength they had gained through his training. He is still a formidable combatant, as demonstrated in Dragon Ball Super during the Tournament of Power. Despite Goku and Krillin's pleas, Master Roshi demonstrated that he still has enough of a fight left in him.
Anime: Dragon Ball