20 Most Terrifying Enemies In Video Game History
16. AM - I Have No Mouth, And I Must Scream
If the quote above doesn't give you an idea of the kind of baddie we're dealing with here, I don't know what will.
Like every evil supercomputer worth its salt, AM (Allied Mastercomputer) oversees the total destruction of all mankind. Not content with simply wiping out the last vestiges of the human race however, AM preserves five survivors with the intent of torturing them for all eternity in a series of tests and trials designed to exploit every single weakness and trauma. And when I say "for all eternity", I mean exactly that - AM goes so far as continually extending his victims' lifespans for the sole purpose of prolonging their suffering.
Evil's not a strong enough word to describe AM, and should you be unlucky enough to earn the game's worst ending you'll get a first hand demonstration of his incalculable cruelty (spoilers, obviously).