We go to the movies for the hero stories, but we stay because of the villains that make them better. In the world of science fiction, audiences have been overwhelmed by some of the most extraordinary characters in cinema history. It's just those villains who always emerge as legendary. Whether recurring villains or one-off antagonists, the 10 characters that made this list helped shape the genre.

A cartoon blue ring octopus remixed from annres' octopus I know that it's supposed to be an alien but it kinda looks like an octopus to me more than an alien.