The Kelpie is said to be a supernatural water-borne horse that haunts the numerous rivers throughout Scotland and Ireland. Its appearance is said to be both haunting and powerful. The creature is said to be so cold it can cause death with a single touch.
Honestly, the Soucouyant is terrifying. It is a bizarre creature that comes from Dominica, Trinindad, and Guadeloupean lore. They are supposedly similar to vampires, but the being removes her skin at night and flies in the form of a fireball.