Kamesennin

He is a old man who has a turtle shell on his back. He also rides on turtles too. He is very perverted in some ways. He taught Gokou how to do the kamehameha. It took Kamesennin years to master it. Gokou mastered it just by watching him do it. He also gave Gokou a cloud to ride on. He used to be the strongest in the world when Gokou was a little boy. He taught Gokou martial arts with Kuririn when they were young. He is also known as Jackie Chun at martial arts tournaments. He may not look like it, but he has lots of muscles under that old, skinny, weak looking body. He taught Gokou lots of things when he trained under him. He taught him that there was always someone better so you have to train to get stronger. He showed that at the martial arts tournament in the begining of the series when he defeated Gokou. He was a hero and a good guy in Dragonball. But in Dragonball Z, he turned into a perverted man. He uses his "charm" to Bulma, but for some reason, it doesn't work. He always end up getting a slap or two.