Top 30 Scariest Movie Aliens

You have to be pretty brave to watch these alien movies with the lights off. Welcome to WatchMojo, and today we’re counting down our picks for the most spine chilling, horrific extraterrestrials to ever grace the silver screen. Our countdown of the scariest movie aliens includes films like “Edge of Tomorrow”, “Cloverfield”, "Pitch Black", “War of the Worlds”, "The Thing", and more! Scary aliens have been a staple of film since its inception. Have any of your favorite aliens been scared off our list? Let us know in the comments below!