Yamcha is a bandit.
Yamcha is revealed to be a bandit, who had dug the huge ditch to begin with. After some persuasion from Bulma that he'll get a reward, Yamcha joins the gang.
Trains on Kami's Lookout for one year in order to fight the Saiyans. A Saibamen kills him.
He defeats Recoome on King Kai's planet. He is brought back to life.