Dark Dimension

The Dark Dimension or Dark Realm is what can be considered as a mirror dimension to the existing universe. It is always the exact same size as the existing universe and expands along with it, however, the Dark Dimension is entirely empty, devoid of any material, substance, gas, or any matter whatsoever.

The Dark Dimension is a mystical place, as anyone within it is held by its dark magic and will exist there until the end of time. In other words, anyone trapped within this dark expanse is immortal.

The Dark Dimension is used by celestial beings and practitioners of magic to imprison their adversaries. It is treated as an eternal prison or purgatory. There is no way to exit the Dark Dimension except through a gateway opened from outside the Dimension.

Purgatory
The Dark Dimension is filled with a mysterious magic which "pauses" one's lifespan and protects inhabitants from harm, making anyone within the Dark Dimension immortal and literally indestructible.

The Dark Dimension is also inescapable, because there is no way to open up a portal from within the Dark Dimension itself. Even people who are familiar with opening the Dark Dimension are unable to do it in the Dark Dimension. Because of this, celestial beings and wizards of magic use the Dark Dimension to give eternal punishment to those who are deemed worthy of it. Time progresses normally in the Dark Dimension, alongside the Universe.

When a portal is opened leading into the Dark Dimension, the location of the portal in the dimension it is created will always be where it was created, but the location of the portal in the Dark Dimension will be entirely random, which means that each and every object put into the Dark Dimension will be extremely far apart. Even with the assist of long-range detection magic or technology, the chances of running into something in the Dark Dimension by chance are next to zero. For this reason, it is extremely difficult to find anything put into the Dark Dimension.

List of Inhabitants
Here is a list of people who have been imprisoned in the Dark Dimension (in chronological order).
 * The Maker (rescued)
 * Meck Insignior
 * The Creator
 * Shio Raycotta