An anti-hero is a central character of a story who lacks traditional characteristics that are associated with a conventional hero. While typically guided by the best of intentions, the anti-hero is a classically flawed character with a history of bad decisions and a questionable moral code.

An antihero is the main character of a story, but one who doesn't act like a typical hero. Antiheroes are often a little villainous. Traditionally, the protagonist — main character and focus — of a story has been a hero: someone good, noble, and brave.

An antihero is a character who, though they might occasionally do the right thing, often does so for the wrong reasons. The term first came into use in 1714, though the idea of a character who is cowardly or morally grey is far older.

Bruce Wayne lives alone (almost), shut off from society with his money. His attitude alone paints him in enough light to be considered as antihero as his behaviour does. There's a reason they call him The Dark Knight. He's not their knight in shining armour, he's their flawed, reluctant antihero.