(n) one who seeks heroes out and plots to exploit their shortcomings, knowing they're pathetic and undeserving of any recognition of any sort.

Someone who is suposed to be the hero, but has a lack of hero qualities, which would means he or she isn't pretty, brave or strong or whatsoever a hero should be.
The Antihero is someone with some of the qualities of a villain, up to and including brutality, cynicism, and ruthlessness, but with the soul or motivations of a more conventional Hero.

an anti-social, emo kid, grunge/punk. rebelous. hate rednecks, jocks, wiggers, homophobes, popular kids, yuppies, and almost everone.