Zoey

Marie

Ignacio

Galen

Ollie

Tala

Quinn

Bodie

Teacher

British

Vampire Bodyguard

Francis

Woman

Bodyguard

The Narrator

African lady

Soft Bubbly

Southern

Robot

Hailey

French

Hood

Indian Girl Accent

A French Girl

Male Russian Accent

Irish

While the game calls these sirens, they're more accurately nixa: a far more vicious type of siren that, unlike merpeople, have wings, allowing them to fly.[1]
The bestiary entry can be obtained by reading Journey to the End of the World.

Bestiary entry
Out at sea, if you hear a beautiful woman singing, turn the ship around at once. You understand? Even if it means sailing straight back into a storm.
– Arike of Hindarsfjall, advice given to his son before his first solo voyage

Siren