Siren Anatomy – The character can take on the form and/or characteristics of a siren. Siren Anatomy is also known as Siren Physiology and Siren Mimicry.
Literary Critique of Siren Anatomy
Venus (Marvel) is actually a siren who is ashamed of luring sailors to their deaths and posing as a goddess!
Sirine – TSR 2140A Monstrous Manual
Ravenloft Siren – TSR 2173 Monstrous Compendium Annual Volume 4