Mavka

Creatures from Ukrainian and Polish folklore living in the Carpathian forests, caves and mountain pastures. They look like ordinary girls, tall, round-faced, with long braids, but from the back she is not covered with skin and you can see all her insides.

Initially, this is a non-malicious creature. Over time, ideas about her changed, and stories began to occur where she already sucks the life force out of a person, and can also lead away with the help of some intoxicating charms.