James Cameron's Terminator is the ultimate slasher villain. First dreamt up as a robot torso clutching kitchen knives and dragging itself from an explosion, the menacing metallic sci-fi action icon is a relentless cyborg assassin that will never stop in its pursuit of a programmed target until either they are dead or its battery runs dry. 

Not even a shotgun blast to the head can stop the Terminator sent back in time to 1984 from post-apocalyptic 2029, when war rages between man and machine, to kill Sarah Connor (Linda Hamilton), mother of mankind's future resistance leader—ironically conceived with the flesh-and-blood soldier (Michael Biehn) he sends back in time to protect her. Head scrambled? It's a lot easier to survive such a mind blow when you've got a metal endoskeleton beneath your living tissue.