#5: NATASHA HENSTRIDGE AS SIL IN SPECIES (1995)
What happens when you splice alien DNA with that of a human female? According to the gory hit Species, you get a hybrid that looks like Natasha Henstridge. And we thought those Weird Science kids knew what they were doing! Of course, Henstridge’s Sil isn’t the “docile and controllable” creation that scientists Ben Kingsley and Forest Whitaker hoped for—she’s a man-eating sex fiend that sprouts tentacles on her back from time to time. You can’t blame a couple of heterosexual male scientists for trying.