From ROI Wiki

Verok is the Sattazin equivalent of Hell, and is equally dark and terrifying. The name come from ancient Sattazin, and means a place of great torment. And, while the concept of Verok is known among the other races by different names, the Sattazin name for it is the one most commonly used of all of them, and thus has found its way into the Yigzan, Gorg and Midazin languages over time as a result. Verok is the polar and complete opposite of Tersar, and is the abode of the evil, the cursed, and those who have rejected Meshua. It is ruled over by Negago, it's king.