What defines a comic book superhero as a unique character?  Is it a name, or a costume, or a power set?  What about a hero’s “secret identity”?  Does it even matter who’s wearing the costume?

For what it’s worth, I suspect that the majority of people reading this post have a general conception of “Superman” as a single, unique character, albeit one with multiple versions — “pre-Crisis”, “New 52”, “Golden Age”, and so on.  It’s probably the same with Batman, or Wonder Woman — or with Captain America, Iron Man, or the Mighty Thor, for that matter.  Even if these heroes undergo occasional costume modifications or power fluctuations — and even if someone else steps into their heroic role for a time in the service of a storyline — there’s still a sense of a core character underneath it all — an “ur-Superman”, an “ur-Batman”, and so forth.  Read More