The Exploding Man
As a young man, this wanderer was an optimistic hero. With a little concentration he could expel concussive blasts of energy from his body to battle villains or launch himself. However as he matured, as did his abilities, which grew harder and harder to control, until he was the center of a tragedy, which saw him taking himself away from the hero scene, spending his time travelling to stay away from civilisation, and thus, away from potential tragedy. However, more recently he has been approached by shadowy forces, who seek to use him to their gains. Has his darkness made him susceptible to their control, or is the young hero inside of him still alive and well?