Creatures known as "Grumkins" and "Snarks" are mythical creatures that appear in Westerosi folktales. They are supposedly the kind of monsters that little children hear about in nursery stories, the kind spoken of in the same breath as ghosts, goblins, vampires, the bogeyman, etc. The White Walkers have not been seen by anyone in eight thousand years by the time of the War of the Five Kings, and so they have become the stuff of legend. In the present day, White Walkers are most often spoken of in nursery stories and fictional tales, alongside the likes of ghosts or "grumkins and snarks".