Xibala (devilsaur)

Xibala (pronounced "Shih-bala") was the first of the devilsaurs, and mother to the loa Rezan, mother to all that came after. The Zandalari locals stay away from the eponymous region of Xibala where her bones remain, far to the south of Zandalar, as the area has been claimed by the beasts.

Speculation
The troll spectre called Dark Chronicler located inside the Throat of Xibala is probably one of her last remaining followers, based on his two lines of dialogue where he accuses the player of treading on sacred ground, and on his death where it's mentioned he will go to Xibala.