Tibetan Yeti

Tibetan Yeti, also known as Abominable Snowmen, were anthropoid creatures native to Earth. Robotic semi-replicas of the species were constructed by the Great Intelligence. They dwelt in the Tibetan Himalayas.

Little was known about them, except that they were large, furry, probably semi-sapient humanoids. They were timid rarely approaching travellers.

Most humans believed them mythological. Professor Travers went on an expedition to find them in 1935. After an adventure with the Robot Yeti, Travers finally spotted what he believed to be one and went in pursuit. (DW: The Abominable Snowmen) However, as of at least 1975, he appeared not be in possession of any evidence of the species' existence. (DW: The Web of Fear)

Decades later, a team of monster hunters attempted to photograph the elusive Yeti and were captured by the Great Intelligence. Lama Gampo, a monk who had sworn to protect the world from the Intelligence, blew a great horn and called the real Yeti who howled in response and descended the mountains to fight with their robotic counterparts. (DWM: Yonder... The Yeti)

Possible Sightings
According to Bea Nelson-Stanley, the Sultan of Ishkanbar had seen a Yeti. (SJA: Eye of the Gorgon)

The Museum of Things That Don't Exist had nine different varieties of Yeti that all supposedly don't exist. However, the exhibits weren't known for their accuracy. (EDA: The Taking of Planet 5)