A while back I wrote about monsters that deserve their own movies, but I neglected a far more tragic case: great monsters imprisoned in lackluster or out-right terrible films. Sometimes it's a case of a fantastic creature concept failing to translate on screen. Other times, a truly gifted FX crew worked their magic in an otherwise uninspired production. You'll even find the occasional good film with a far-superior monster at its center.
So here are 10 demons, aliens, gods, mutants and cyborgs who could do so much better.