Let me see if I have this correct, Lieutenant - it's an 8-foot creature of some kind with acid for blood, and it arrived on your spaceship. It kills on sight, and is generally unpleasant.
— Harold Andrews
When they first about heard of this thing, it was "Crew Expendable"; the next time they sent in marines, they were expendable too. What makes you think they are going to care about a group of criminals who found God at the end of the universe? Do you think they will let you interfere with their plans? They see us as crud. And they will not care if a friend of yours is dead.
— Ripley summing up the role of Weyland-Yutani across all movies.