Related by context. Frequent words. (Click for all words.) 64 invading aliens 60 undead 60 zombies 58 monsters 55 shape shifters 55 alien invaders 54 cyborgs 54 superpowered 53 Necromorphs 53 intergalactic 53 shapeshifting 52 Akrid 52 alien 52 Strogg 52 droids 52 cybernetic 52 Locust Horde 51 beasties 51 supernatural creatures 51 telekinetic 51 zombie 51 alien invasion 51 zombified 51 homeworld 51 baddies 50 bots 50 ninjas 50 aliens 50 bloodthirsty 50 Dr. Eggman 50 malevolent 49 mythical beasts 49 Helghan 49 Skrulls 49 Skrull 49 breathing dragons 49 blood thirsty 49 fantastical creatures 48 superhuman abilities 48 orcs 48 sword wielding 48 mechs 48 supervillains 48 Samus Aran 47 genetically enhanced 47 creatures 47 cyborg 47 evil Decepticons 47 Galactus 47 Helghast 47 Commander Shepard 47 mecha 47 Galactic Empire 47 alien beings 46 earthling 46 tentacled 46 robots 46 necromancer 46 mythological creatures 46 Earthlings 46 cannibals 46 orc 46 mutants 46 vampires 46 Stalkers 46 goblin 46 Orcs 46 extra terrestrials 45 ninja 45 vengeful 45 Romulans 45 evil sorcerer 45 Scourge 45 interstellar 45 outer space 45 cannibalistic 45 werewolves 45 Zombies 45 Decepticon 45 evil doers 45 evil doer 45 evil wizard 45 Vengeful 45 sentient 45 bloodsuckers 45 Cybermen 45 demonic 45 mythical creatures 45 Coruscant 44 vampires werewolves 44 mech 44 supervillain 44 vampiric 44 Ninjas 44 Sauron 44 post apocalyptic 44 General Grievous 44 mutant 44 villians 44 ogres 44 Ewoks