A Nixie (or Nixe/Nyx, depending on the region) is a water spirit or amphibian creature from Germanic and Scandinavian folklore, often associated with rivers, lakes, and streams. The term varies by language—Nixie or Nixe (female) in German; Nøkk/Näcken/Nix (often male) in Nordic traditions.
By Mythologysleuth or Cyclone62
Female nixies are usually portrayed as beautiful maidens who can shape-shift, often luring humans—especially men—into the water, and male nixies (like the Scandinavian Näcken) may appear as handsome men, old men, or half-human creatures, sometimes playing enchanting music on a violin or harp.
Some of them, they are usually dangerous and seductive, known to drown or ensnare those they charm, though in some tales they may be more neutral or even helpful.
Nixies represent the mystery and peril of water, the supernatural allure of nature, and sometimes the boundary between life and death.