Gohan

Resistance Saga
When Garlic Jr. returns to get revenge against Kami and achieve immortality he kidnaps Gohan for his dragon ball and hopes to make him his student. However when Goku and Piccolo arrive Garlic Jr. manages to overwhelm and nearly kill them until Gohan rage strikes him sending him out the window, but leaving Gohan with no memory of the power he just used. After Garlic Jr. is defeated Gohan gets to meet his uncle and grandma and learns that he is part Saiyan. When the Dragon Balls are ready to be collected Gohan and Krillin head out and end up finding the last on in the Tsumisumbri Mountains where they are attacked by a group of Bio-Men. Gohan being no match for the Bio-Men is forced to hide behind Krillin until Piccolo arrives and defeats them all and foiling Dr. Kochin's plans.