Fan Casting Ominous Voice in Superman: Man of Steel (1990)

Deep within the depths of space, a group of aliens in a spaceship have stumbled upon a strange, giant seemingly lifeless humanoid robot. All of a sudden, it powers on and begins to attack and kills them off one by one until they are all dead. Then, it plugs itself into the main computer and a strange image appears on the screen and eerily says "Brainiac Systems activated. Set course for Planet Earth."