Zizhu

Zihzu [ZIH-zoo] is the main antagonist of the second novel. He is the demon lord, highly regarded by the lesser demons. He is solely responsible for creating all the demons of the physical realm, which the Medio Gods sought to exorcise.

Prior to Helura's disappearance, the four Medio Gods were going across the dimensions and exorcising demons until they would find Zihzu, who would need the four of them to channel collective energy and destroy. The Gods are under the impression that destroying Zizhu would release all the realms from demonic energy.

Selvija Tells All
Selvija, the only remaining demon 500 years ago when Jorko locked Zizhu in combat, came to Tzad and told her a great secret; Zizhu is under the control of the Universal Destruction, a primordial evil that seeped into the physical realms, and that exorcising Zihzu won't do any good unless the Universal Destruction is subdued.\