I had a neat idea, but I'm not sure how well it'd go over with readers. The main character of this story goes by a certain name and looks a certain way, but openly admits that his real name and real appearance are completely different. Who he is, though, he never tells. The most he'll say is that he promised himself he'd never look at "that face" in the mirror again for as long as he lives. At the end, the villain thinks they've revealed his secret identity, but it turns out that it was just another layer of his disguise and the readers never actually find out who he is. What do you think?