Remix of Zuggtmoy.
This foul demoness resembles a human only from the torso up. This portion of her body is composed of thick rancid sheets and coils of fungus that just happens to have grown into the shape of what would, otherwise, be an attractive woman. Four fibrous antlers grow from her brow, and her hands bear cruel talons. Her lower torso is a coiling pillar of lashing ropey tentacles and other fungus growths. Her skin is a nauseating swirl of greys, blues, purples and blacks.
She appeared almost alien and inhuman as a skeletal-thin humanoid shape draped and veiled in mycelium and lichen. She and her servants were almost a soulless mockery of living creatures.