Nia

Nia is a Banshee that appears in Monster Musume: Everyday Life with Monster Girls Online.

Zoological Classification
A Banshee is said to be a fairy or prophetic spirit stemming from Irish folklore. Acting as a messenger from another world, legend has it that a banshee acts as a harbinger of death by wailing in anguish (or "Keening") to inform people that someone is about to die or has died. When several banshees appear wailing together at once, it is indicated that the death was of someone great or holy.

Aside from their duties as "death prophets", banshees also act as guardian spirits for certain family lines (where their duties as death prophets are called upon to inform other family members of the passing of relatives).

Trivia

 * Her name comes from the Irish myth of Niamh Cinn Óir, a "bean sidhe" (banshee)