Brunikor

Brunikor is a dimension believed to be the oldest of the entirety of existence. It is the realm where the Demon race dwells. It is believed that the only way to reach this realm is to travel to 66 Brunikor, a moon of New Arckas, and find an interdimensional portal at the moon's core.

Geography
Brunikor is a desolate wasteland. The ground is reddish brown, but the atmosphere is somehow breathable by any mortal species. Aside from burnt trees and dead bushes, there is virtually no forms of flora found throughout the area. The terrain is very rocky with mountains, ridges and volcanoes scattered throughout. The sky of the area is locked in a constant night with a blood red nebula looming overhead.

Unlike the normal universe, Brunikor's gravity is a consistent 1.0 G. Even stranger is that Brunikor is not a planet, but a flat plane that extends infinitely in all directions.

History
The Demons were the first beings alongside the Yoltox to inhabit the first iteration of Omni 01. When Omni 01 was destroyed by Vernietigen, the Demons lost interest in living in "I"'s universe and decided to create their own - a universe that would endure for eternity while Omni 01 gets repeatedly destroyed over and over. However, the Demons were not Level 9 beings and were highly inexperienced with creating worlds. They could not create galaxies, not even star systems. As a result, the Demons resorted to creating a barren, lifeless infinite plane with its own unique set of physical laws.

Duivelmassa
After about two centuries, the Demons created a city known as Duivelmassa, possibly the single oldest city in all existence. The demons keep themselves secluded from mortals, though it is known that some have been exiled - one of which is none other than Uszaroth.

The city is divided into nine concentric sectors. One of them is known to be ruled by the Demon Lord Tahzarhuun. Most Demon Lords are ambivalent, though one Demon Lord is particularly bothered by the rest of his kin's apathy. He has resorted to expanding his power by allying with Morduin. Whether or not this is foolhardy is yet to be known.