Siren (monster)

A siren is not only a monster unrelated to mermaids, harpies, and other monsters like vampires, werewolves and ghosts, but singing human-like creatures who hypnotize their human victims with their voice. Some mistake them for "mermaids".

Appearance
Sirens are human-like monsters with pale purple skin, turquoise eyes, and webbed ears like a sea monster/gill monster. When they get angry or trying to scare their obnoxious victims, their eyes turn cat-like and pink with purple sclera, longer claws for nails, "double fangs" and scales on their backs. When their victims are under the influence by the sirens, their eyes turn normal instead of cat-like and pink with purple sclera like their monstrous forms.

When they had their true forms, they have the same appearance they have like when they're angry except they have sharp teeth, clawed feet, lack of eyebrows and having these eyebrows like the vampires from Buffyverse and blank blacke eyes. They can also change to their false human forms.

Powers

 * Voice Manipulation - They can not control their voices of every pitch and every volume or imitate everyone's voices, but hypnotizing their victims with their voice.
 * Shapeshifting - They can morph into any form they want. For example, shapeshifting sirens manifest in the form of Gumball, Darwin, Anais, Nicole and Richard.
 * Eye Color Changing - They can change their normal eyes into pink eyes with purple sclera.
 * Super Strength - They are stronger on what they look.
 * Hypnotizing - With their voice, they got to hypnotize their victims.
 * Siring - They can sire their victims by turning them into sirens with their voice.

Tropes

 * Amazing Technicolor Population: Known for their lilac skin.
 * Cute Monster Girl
 * Enthralling Siren
 * Mind-Control Eyes: They have pink eyes with purple sclera.
 * Symbol Motif Clothing: Most ofte sirens had clothes with music notes in them.

Known sirens

 * Sirena Song (Gravesville Intermediate)
 * Aphrodesia (Siobhan's Dhampir Life)
 * Persephonenka (Willow and Xander)
 * Lorelaiyan Parephan (Willow and Xander)
 * Princess Thona