High Quality Content by WIKIPEDIA articles! "Klaatu barada nikto" is a phrase originating from the 1951 science fiction film The Day the Earth Stood Still. "Klaatu" is the name of the humanoid alien protagonist in the film. Klaatu (Michael Rennie) commanded Helen Benson (Patricia Neal) that, were anything to happen to him, she must utter the phrase to the robot Gort. In response, Gort relented from destroying the Earth and resurrected Klaatu from death.