Scylla

A demon whose top half is that of a beautiful woman, situated on top of a fish/beast/snake body. Much like sirens, the Scylla attacks Humans, but seeks their flesh in addition to their souls. They also have powerful magic in addition to their voluptuous charms, leading seafarers of all genders to their dooms. Rumors suggest that she was born from the curse of a queen who was sacrificed at sea.