Grither

The Grither is a monster that appears in the Tales from The Darkside's third season festive horror tale, "Season of Belief" : similar to the Krampus it is said to be a child-eating monster and used as a bogeyman by a couple of parents to scare their unsuspecting children.. ending in a terrifying case of karma.

Brief History
The Grither is originally made up to be a purely fictional monster made up by a couple to scare their children during Christmas Eve, the pair take delight in stirring the imagination of said children and even devise a gruesome song about the Grither and describe it as a child-eating bogeyman that will come whenever someone speaks its name and eat the children while killing any that get in its way.

After numerous false alarms the parents get a shocking case of karma when they are violently attacked by the Grither and killed in front of their children, whom they had been tormenting - in effect being killed by the very bogeyman they had been using to scare their children with.