The Mirkmonster is a behemoth who appears in the Fraggle Rock episode "A Cave of One's Own." It dwells in a cave that Mokey and Red have ventured to in search of supplies for their cave-warming party. Red is cautious of the beast, but Mokey is confident that their positive energy will protect them. However, as Mokey continues to gather flowers and herbs, Red is snagged by the giant monster's hand, and flung across the cave. The two ultimately escape his dwelling, Mokey never the wiser of their impending fate.