Klaatu barada nikto

The phrase "Klaatu barada nikto" originates from the 1951 Cold-War-era science fiction film The Day The Earth Stood Still. The phrase "Gort, Klaatu barada nikto" was used to stop Gort, the robot in the film, from attacking.

There is no known translation for the phrase, although the word "Klaatu" would seem to refer to the name of the humanoid alien. One popular, though officially unconfirmed, translation has the word "barada" meaning "alive" and the word "nikto" meaning "not" (by comparison with the Latin nix); thus, "Gort, Klaatu is not alive."

Ever since the term was originally used, the phrase continues to show up in popular culture.

• The words are seen in the 1982 film Tron, posted on a sign hanging in the hero's cubicle.
• In the 1983 film Star Wars Episode VI: Return of the Jedi, three of Jabba the Hutt's skiff guards are named Klaatu, Barada, and Nikto.
• In an episode of the 1987–1996 Teenage Mutant Ninja Turtles cartoon series, three aliens encountered by Donatello and Rocksteady are named Klaatu, Barada and Nikto.
• In the 1992 film Toys, the character Leland Zevo speaks the phrase to stop a rampaging sea creature.
• In the 1993 film Army of Darkness, the third installment of the Evil Dead trilogy, Ash has to speak similar words in order to retrieve the Necronomicon. He fails to remember it properly ("Klaatu... verada... necktie?") and thus awakens a horde of malicious Deadites.
• In the SNES video game Lost Vikings 2, variants of the phrase were used (such as "Klatu, Veratu... Howriyucan!") as teleport spells at the end of a series of levels; like the misspoken version in Army of Darkness, they do not work quite as desired, though the correct version is eventually remembered.