Nixie (folklore)
The nixie, nixy, nix, neck, or nicker (Old English: nicor; Danish: nøkke; Dutch: nikker, nekker; Estonian: näkk; Faroese: nykur; Finnish: näkki; German: Nixe; Icelandic: nykur; Norwegian Bokmål: nøkk, nøkken; Nynorsk: nykk; Swedish: näck, näcken), are humanoid, and often shapeshifting, water spirits in Germanic mythology and folklore. Under a variety of names, they are common to the stories of all Germanic peoples, although they are perhaps best known from Scandinavian folklore.