Gohan's  Character info

Gohan is the first child, son of Goku, he ends up to be even stronger than Goku his father. He becomes a Super Saiyan in cell games saga. Gohan's whole life he has had a very intense powerful strength inside him that unleashes when some one makes him mad, hurts his friends, and hurts him enough. Later on he goes to High School, he becomes the Great  Saiyaman. That is his "alter ego", he wears a helmet with a green suit with white mantle, and a special watch invented by Bulma that helps him  change his outfit from normal to super-hero. Later on Videl, the person that always protected Satan City before Great Saiyaman came to Satan City, Videl figures out later that the Great Saiyaman is Gohan. Gohan  replaces his helmet with a bandana and sunglasses, so that he can be in the Martial Arts Tournament. Videl demands that Gohan teaches Videl how to fly. Through those years after the cell saga Gohan did not train at all he studied, unlike Vegeta which trained every day  for 7 years strait.  When Gohan becomes mystic Gohan or aka Ultimate Son Gohan he can change to any of his Super Saiyan forms by just staying a regular Saiyan, which means he won't have as much anger as he does when in Super Saiyan forms.