GORT! What are you doing on the Space Shuttle????

For those of you who do not know, Here is more info from Wikipedia:

The eight-foot metal robot accompanies Klaatu, a visitor to Earth from a distant planet, aboard a flying saucer. He does not speak, but uses a beam weapon projected from beneath a visor to vaporize weapons and obstacles. Klaatu described him as being part of an interstellar police force. He claims that the people of the universe constructed numerous robots like Gort and gave them irrevocable powers to respond to violent actions in order to "preserve the peace." He further claims that "There’s no limit to what [Gort] could do. He could destroy the Earth."^[1]

The character was based loosely on Gnut, a large green robot from outer space in "Farewell to the Master", a 1940 short story by Harry Bates which was used as the basis for Edmund H. North‘s screenplay. In the story, Gnut is believed to be the servant of his humanoid companion, but reveals himself, at the end, to have been the master.