Xhamen-Dor

Xhamen-Dor, also known as The Inmost Blot or The Star Seed, is a Great Old One of decay, parasites, and transformation who appears in the H.P. Lovecraft-inspired Cthulhu Mythos.

Description
It is a Great Old One whose form is a monstrous hybrid of fibrous, twisted hair-like fungal tendrils and toadstool-like growths which emerges from a mass of bones or a great corpse. Xhamen-Dor has various incarnations and forms it has taken, one of which is that of a serpentine dragon.

History
It originated in Carcosa, from the residue left behind by Hastur which fused with the remnants of the minds and souls of those consumed by Carcosa. Xhamen-Dor borrows into the minds of those who have learned either its name or the true nature of Xhamen-Dor, spreading within their bodies and turning them into undead servants. It has visited countless worlds, turning their inhabitants into the undead, and feeding them to Carcosa.