76. Mister Mxyzptlk

We can't really pronounce his name either, but this little trans-dimensional circus carnie pest is just as trying on our patience as he is on Superman's. Mxyzptlk is not one of Superman's most interesting or dynamic rogues, but he is one of the most consistent and annoying ones the Man of Steel faces.

Arguably, his appearance in the Alan Moore story "Whatever Happened to the Man of Tomorrow?" is his best, allowing the character to become more than just a trickster and provide some major torment for Superman during his last days.

This fifth-dimensional sorcerer, made up of "other things" than just a funny derby hat, was a welcomed addition to "Tomorrow"'s inventive "what if" storyline, and most fans consider that to be his biggest glory. That, and a few extended appearances here and there, are all that prevent us from saying his name backwards and making him go away.