19. T-1000

Terminator 2: Judgement Day (1991)

When looking for something to present a challenge to the hulking cyborg form of Arnold Schwarzenegger's original flavour Terminator, James Cameron conceived of something more complicated, even more driven and able to turn itself into almost anyone or anything, some laws of physics be damned. Robert Patrick was the man chosen to play the cunning metal killer, and left an impact that helped push Terminator 2 beyond the original in terms of popularity. Schwarzenegger's version might be famous for never stopping, but with Patrick's slinky shape-changer, you might never see him coming until it's too late. Sorry, Wolfie.

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