Film: Men In Black
Alien Ability: Master of disguise
Evil Rating: 4/10 (It's all in the teeth)
Wearing a costume and posing as a Mexican immigrant, 'Mikey' is the introduction to the world of the men in black. As the film makes abundantly clear, aliens walk among us, and we've got no idea - largely thanks to the men who police the planet's many visitors.
Tommy Lee Jones' Agent K pulls Mikey out of a police line up and informs the flipper-ed mutant he's violated no less than seven intergalactic treaties. Removing his rather realistic head, Mickey is revealed to be a much uglier creature than the hairy Mexican he first appeared as.
When he makes a run for it, Agent K blows him into a fountain of blue goo. A sad end for the first of many impressive Men in Black aliens.