Aliens are to sci-fi as football is to Texas! When you think “sci-fi”, your mind probably immediately goes to some kind of alien or some kind of robot. The reason for this is that aliens are completely awesome in every way. Well, unless they’re the kind that wants to eat everybody on your spaceship which is… less awesome for the ones being eaten. But not all of our fictional extraterrestrial neighbors are out to destroy us! For your viewing pleasure, here are twenty of the coolest alien races, from the cuddliest to the deadliest.