Banshee

A Banshee is a malevolent and spectral undead entity, often appearing as the vengeful spirit of a woman who met a tragic or sorrowful end. These wailing apparitions are harbingers of doom, their haunting cries capable of chilling the bravest of hearts. A Banshee's appearance varies, but it typically reflects the visage they possessed in life, albeit twisted by their torment. Their ghostly forms are translucent, with a ghastly pallor and luminous, mournful eyes.
It is rumored that Banshees serve as the spectral minions of Nus, the Shadow Master. However, Nus does not govern over them in the traditional sense. Instead, she condemns them to a perpetual existence of despair and torment until someone or something releases them from their unending agony.