One of the main characters' younger brother, he's a bit of a crybaby who must be protected. The Big Bad sees him as the biggest threat and wants him eliminated. In the end, it's his power that allows them to overcome one of the biggest threats to the group and, without him, failure was inevitable. Years later, he ends up developing a darker take-no-shit side who punches out another Big Bad and can laugh off pain. He still has quite possibly the strongest partner, of course.
Hey, look, I can do it too.