19. What's In A Name?
Before Lieutenant Gorman described it as a Xenomorph in the 1986 sequel Aliens, the creature did not have a name, and was simply referred to as Alien in the credits. Thanks to the expanded universe of comics and video games, we have since come to learn that the creature has a number of different names.
Over the last 40 plus years, the Xeno has also been referred to as Kane's son, a dragon, the organism, a serpent, and perhaps the most cool name of all - Internecivus raptus, aka the murderous thief. How great does that sound?