Kona

Kona is the main antagonist of the episode Ancient Guardian in the 1974 TV series Land of the Lost.

History
Kona is a Yeti-like monster who has been trapped in the mountain by the Sleestaks with a magical statue named the Guardian. One day, the Marshalls remove the statue without knowing what it is, releasing Kona. At night, he goes to the Lost City and attacks the Sleestaks, but Enik manages to make him flee by using lasers.

The following day, Enik convinces the Marshall to bring back the statue in its place, however Kona arrives and breaks the statue. He then attacks the Sleestaks again and destroys several of their eggs.

Two days later, the Marshalls use the repaired statue to block Kona's entry in the mountain, making the monster unable to return in the Land once again.