http://en.wikipedia.org/wiki/Hero[people] that, in the face of danger and adversity or from a position of weakness, display courage and the will for self-sacrifice, that is, heroism, for some greater good, originally of martial courage or excellence but extended to more general moral excellence.
http://en.wiktionary.org/wiki/superbetter than average, better than usual
http://www.answers.com/superheroA figure, endowed with superhuman powers and usually portrayed as fighting evil or crime.
http://en.wikipedia.org/wiki/SuperhumanA superhuman is an entity with intelligence or abilities exceeding normal human standards.
Uncle Ben, "Spiderman" (2002)Remember, with great power comes great responsibility.