Hero
A hero is a man or woman (then often called a heroine), traditionally the protagonist of a story, legend or saga, commonly possessed of powers far beyond that of a standard human, which enable him or her to perform some truly extraordinary, beneficial deed (an "heroic deed") for which he or she is famous. These powers are sometimes not only of the body but also of the mind.
A person normally becomes a hero by performing an heroic deed. Traditional deeds are slaying of monsters and saving people from certain death. A hero normally fulfils the definitions of what is considered good and noble in the originating culture. However, in literature, particularly in tragedy, the hero may also have serious flaws which lead to his downfall, e.g. Hamlet.
Sometimes a real person might achieve enough status to become a hero in people's minds. This is usually complemented by a rapid growth of myths around the person in question, often attributing him or her with powers beyond those of ordinary mortals.
Well-known heroes approach the gods in status in some cultures.
Famous heroes include: Hercules (ancient Greece), King Arthur (medieval England), Mulan (China), Beowulf (iron age Scandinavia), and Stenka Razin (Russian folk hero).
A book of recent fame, dealing with the telling of heroic stories, is called The Hero with a Thousand Faces.
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Hero is also a Greek name, applying to several characters in mythology and fiction.