We would not want to make first contact with these extraterrestrials. Join http://www.WatchMojo.com as we count down our picks for the top 10 scariest movie aliens.
Alien, Aliens, Evil, Scary, Scariest, Horror, Movie, Extra Terrestrial, Violent, Top 10, Countdown, Blob, Xenomorph, Riddick, Pitch Black, Killer Klowns, Bodysnatchers, Starship Troopers, Star Trek, Predator, The Thing