Superman is Superman, Clark Kent is the disguise. Everyone else grew into their roles. Superman was born Superman. If the above seems strange, imagine this. What would it be like if you had a predisposition towards something, an innate talent so to speak and you discovered it the moment you were born. Life would be completely different. You would look at everything through those lenses. (If you find this far fetched, imagine the difference between learning a skill as a kid and when you grow up). Batman is a strange case though. I would argue that both Batman and Bruce Wayne are disguises. The real Batman/Bruce Wayne is the one in his secret lair applying his intelligence to the problems at hand. I suppose only Alfred ever gets to see the real Bruce Wayne. People usually consider Superman to be the more genial of the two but I sometimes wonder if that is really the case. It is an easy characterization to make I suppose because of his methods. His gift of flight, his blue and red suit. C