10 of the Most Memorable Betrayals in Movies

That initial act of treachery led to the deaths of everybody aboard the Nostromo, bar one woman and a cat. What makes Ash's behaviour more shocking is that he was so likeable beforehand. While he might have been a little wrapped up in his work and his adoration of a creature that just tore through a man's abdomen was certainly questionable, he was polite, rational and occasionally compassionate. It's only on a second viewing that we begin to see Ash for what he really is: a cold, calculating machine who is merely carrying out company orders. Though it's not as if that revelation made a blind bit of difference to the crew of the Nostromo.