(answer to the question "What is a hero?")
A hero cannot be self proclaimed and has to be somehow distinguished by someone else. By whom, in which context and on what ground ? Answering to these questions will give you a fair notion of the value and durability of this distinction.
Warning : heroes in mirror are hollower than they appear. By no means can this superficial notion define a being : it is not about what you are, nor even about what you do, but about how you are perceived.