Xana y Cuelebre Asturian Mythology

Disclaimer: Design of these characters by me (LadyKraken), based upon Asturian Celtic Mythology.

These characters are la Xana and el Cuélebre, two of the characters found in my Asturian mythology.
Some info about the characters:

Xanas [ k 'sa nas ] are very beautiful female creatures believed to live in rivers and forested regions with pure water. They are slender, wight blond or light brown hair and they attract men with their hypnotic voices during spring and summer nights.

They're like river mermaids with legs and they have children which are like changelings.

Cuélebres [ 'kwe le βres ] are giant winged serpent-dragons, that lives in a cave, guards treasures and keeps xanas as prisoners. They don't usually move, and when they do it, it is in order to eat cattle and people.