Yeti (Doctor Who)

The Yeti are fictional robots from the long-running British science fiction television series Doctor Who. They were originally created by writers Henry Lincoln and Mervyn Haisman and first appeared in the 1967 serial The Abominable Snowmen. The Yeti resemble the cryptozoological creatures also called the Yeti. In the series' fictional universe, these robot Yeti serve the Great Intelligence, a formless entity with mysterious origins, and are used by the Intelligence to aid in its invasions. Following this debut appearance, the Yeti only had one other major appearance: in the 1968 serial The Web of Fear, which depicted the Yeti being used by the Intelligence in its attempt to subjugate London using the London Underground.

https://en.wikipedia.org/wiki/Yeti_(Doctor_Who)