Zuggtmoy

Zuggtmoy, also know as the Demon Queen of Fungi, and the Lady of Rot and Decay, was a demon lord.

Activities
Her only desire was to infect living creatures with her spores, making them her mindless slaves and eventually into rotting and decomposing hosts for mushrooms, molds and spores that she spawned.

Zuggtmoy's lair was Shedaklah, a massive palace of two dozen mushrooms, all interconnected with bridges and lined with countless chambers and tunnels. It was located on the same layer as Juiblex's Slime Pit. The Demon Queen of Fungi and the Faceless Lord were driven by their insatiable hunger to destroy and devour others.

Many of her cultists followed her unwillingly and unknowingly, having somehow become infected with her spores, either mind-controlled or transformed, serving as extensions of her will until they were utterly consumed.

Description
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 souless mockery of living creatures.