[@ChaoticLaw]

I like your character, and he is accepted, after one small addition. 

I would like to point out that humans do not have powers in this world, unless they are somehow related to something supernatural. Jack's Pyrokinesis could easily be explained away by stating that somewhere along the family tree, a fire-based creature got together with an ancestor. There are other ways of explaining powers in a human, of course, such as pacts, and so on.

Bottom line, humans have no powers. There are no mutants, or magical humans. He would need to be a descendant from a magical creature somewhere in his family line. It's an easy addition, though, and nothing that would change anything about your character, other than making him lore-friendly.