Pyramid of Shadows
A mezzodemon encountered in the Pyramid of Shadows – he’d been imprisoned in a frozen room for centuries. Vyrellis used DECEPTION to lead the party to Thath’kul in the hopes that he would be slain.
Long ago, Thath’kul was a general in Karavakos’s army and was instrumental in a planned coup. However when the moment of truth came, Thath’kul did not follow through. Shamed by his failure, he snapped and killed 34 civilians which is why Vyrellis hates him so much.