"A siren..." My mind automatically flips through my knowledge. In Fantastic Beasts and Where to Find Them, sirens are stated as being the earliest race of merpeople. They are known for their beauty and natural talent of Sway, which allows them to control or influence others. Their affinities are air and water, and they manifest in a variety of ways. One such way is the appearance of their wings that take after those of an osprey, also known as a sea hawk, river hawk, and fish hawk.