She’s a staple in old Eastern European folklore, obviously, but she’s also an antagonist in the Hellboy and Fables comics as well as one of the DLCs for one of the newer Tomb Raiders.
Super cool, and some if the old folklore is just wild. There’s a story about how she would break into a man’s house in the middle of the night (on multiple consecutive nights) to count his spoons, and when he tried to stop her, she kidnapped him and then ate him later (or, IIRC, turned him into an inanimate object depending on the version)