Scandinavian Myth: Nøkken

 The Nokken (Nøkken) ("ø" is a Norwegian and Scandinavian letter) is a creature that lives in ponds, lakes, slow rivers and so. It lures people to drown and is in most legends and adventures an evil being. It is one of the creatures from the underworld. It is often tought of as an elf creature.

Similar creatures are known in many areas in Europe. It has some area differences and also different ways of behave during the time. In New tales about it, it often plays on a violin to trick People close to the water. In older times it could discuse himself as a horse.

To Escape the nøkken you could just say his name. You could also trow steel into the water for protection.