Incarnates have acces to powers through a wierdness within themselves. They can either be mutants, with inborn powers beyond normal keen, or their power is the result of some kind of accident, curse, magical geas or otherwise made second nature to them.
Incarnates universally have a concept that can be described in a few words. This is often an emelental association; all fire, air or electric powers. Other examples include illusionism, telepathy, telekinesis, or regeneration. All powers should run in this theme.
This is the basic and most common super hero.