I didn't see it mentioned and someone mentioned not seeing super heroes in novelization form....before he became world famous for the Game of Thrones series, George R.R. Martin wrote a series of books where ordinary people woke up one day with superpowers, extra-ordinary abilities. Some became "good guys" and some became "bad guys." It depended on their personalities. The series was called: Wild Cards.
Not really. Both Heracles and Ares are heroes in the Marvel universe. So calling the heroes in the Iliad superheroes isn't a stretch of the imagination. I'd say being invulnerable except in the heel is a superpower.
I'd also say that have superpowers and being of the superhero genre are also different. Superhero fiction kind of presumes a certain style, structure, aesthetic or at least some basic conventions that aren't being invoked in classical Epics.
