Yeti
A snowy Sasquatch living wild and in hiding in the Himalayas. For the purposes of this archive, this may also include the Robot Yetis employed by The Great Intelligence. In some cases, we just don’t know. For this reason, back in the early days of Who Back When, we’d also refer to cases of Chekhov’s gun where the gun was never seen, let alone fired, as “the yeti of the story”.
Four-and-a-bit Doctors battle Cybers, a chap in silver spandex and a Time Lord conspiracy in the 20th Anniversary Special
The Doctor & Co go on a road trip to Peking with Marco Polo. Meanwhile, a man by the name of Tegana is plotting to steal the TARDIS.