Quote
And he would never have to worry about his identity being discovered, because who would think that a guy who had never walked a day in his life was secretly a superhero?
And it's a lot more realistic than hiding your identity with a pair of glasses.

Maybe he could use a device to hold his legs in place so he can fly, and float slightly instead of standing, so no one guesses he can't walk.

"Oh, you can’t help that," said the Cat: "we’re all mad here. I’m mad. You’re mad."
"How do you know I’m mad?" said Alice.
"You must be," said the Cat, "or you wouldn’t have come here.”

- Lewis Carroll, Alice in Wonderland