NPC in Goddess of Victory: Nikke. Also known as "Siren".
She has dark blue/black hair which is aqua on the inside set in absurdly long twintails, and yellow eyes. She has a relatively tall and slender build compared to most Nikke, with medium breasts. She wears a blue/black skintight, sleeveless bodysuit with a hexagonal pattern, neon-aqua highlights and see-through cleavage, along with fingerless elbow gloves.
She possesses a prototype "Kotodama": the ability to control others (humans, Rapture, and other Nikke) by speaking. However, doing so requires great effort and puts considerable strain on her body.
For this reason (and in reference to her namesake), she does not speak under normal circumstances.