The term "hero" is a really slippery concept. "Hero" can mean the "protagonist" of the play. A protagonist in the main character who changes, traditionally in a positive way, as a result of the conflict that he or she faces and is able to resolve. A hero also can be see as a virtuous character who is able to do some kind of good not only for him/her self but for someone else as well. There are "comic heroes" and "tragic heroes."