Yale (mythical creature)
Heraldic beast whose meaning is “proud defence”. Although it has never been identified with a living or extinct creature, it may be based on descriptions of Indian water buffalos.
Grindylow
Malignant Yorkshire water spirit said to lurk in stagnant pools, dragging down into the water those children who venture too close.
Incubus
Demon in male form that seeks to have sexual intercourse with a sleeping woman.
Sooterkin
Imaginary kind of afterbirth in the form of an “evil-looking little animal” especially attributed to Dutch women.
Peg Powler
Evil spirit of the River Tees in northeastern England, said to drag children who ventured too close the water’s edge to their deaths.
Cat Sith
Fairy cat of the Highlands of Scotland, black and as large as a dog.
Undine
Undines (or ondines) are a category of imaginary elemental beings associated with water, first named in the alchemical writings of Paracelsus. Similar creatures are found in classical literature, particularly Ovid’s Metamorphoses.
Cailleach
Ancient Celtic hag goddess who in her various guises shaped the land, controlled the forces of nature, and was responsible for the harsh nature of winter.
Myrmecoleon
Usually considered to be a mythical creature of legend, it has also been identified as a rock hyrax.
Wulver
Fairy being, part of the folklore of the Shetland Islands off the coast of Scotland, a type of werewolf, half man, half wolf.