5. Gort ('The Day the Earth Stood Still')
Basic Function: To guard Klaatu's flying saucer while the alien explores America, and eliminate any threat to him.
Good or Bad: The humans beings certainly see him as a threat and he doesn't hesitate to take out anyone that gets in his way, but ultimately he's just trying to "preserve the peace."
Boldest Action: Killing two guards and bringing Klaatu temporarily back to life when he's gunned down by U.S. authorities.