Super One : This is the leader of my superheros team.
It's a regular human with an exceptionally severe case of schizophrenia and megalomania.
He believes to be the special one, a chosen one, a protector of the Universe with superhuman powers. And he believes it so strongly, that his mind actually generates amazing momentary super powers like super strength, flying, Xray vision, invisibility, etc...
Though he doesn't normally possess such abilities he can gain them almost by will.
No one knows his real identity, because whenever he isn't Super 1, he always has a different identity, some sort of extreme multi personality disorder.