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The Yeti of the British science fiction television series Doctor Who, although resembling the cryptozoological creatures also called the Yeti, are in actuality extraterrestrial robots. Their external appearance, that of a huge hairy biped, disguises a small spherical mechanism that serves the Great Intelligence , a disembodied entity from another plane. The Great Intelligence tried to form its own physical body in order to conquer the Earth. The Yeti are initially a ruse to scare off curiosity seekers, and later form an army serving The Great Intelligence.

The Great Intelligence and his Yeti minions were thwarted twice by The Doctor's second incarnation, played by Patrick Troughton, in the serials, The Abominable Snowmen and The Web of Fear . The sound effect of a Yeti's roar is created by running the sound of a flushing toilet backwards.