Five seven-foot-tall humanoid beings completely covered in robes and masks who appeared in Katapesh about a millennia ago and claimed rulership of the nation. Impossibly powerful arcane spellcasters who can catch magic missiles out of the air. They are known as Angruul, Jinvar, Krimiltuk, Morvithis, and Tzandarkon.
Not long after appearing in Katapesh, they claimed control of Stonespine Island. Once Okeno was under their control, they dominated and altered the Corpse Orgy and compelled it to hunt down slaves who attempted to escape captivity through the city’s Sweatways.
First Reference: Chapter 175
Other Notable References: Chapter 188