Nothing. Literally nothing. Not a blank wall. Not an empty space. It was an absence so profound that the eyes absolutely could not focus on it. Any attempt to look into that portal ended with the observer staring intently at one side or the other of the serpentine frame. — From Darksiders: The Abomination Vault
The realm of non-existence known as Oblivion is a place of sheer nothingness located outside of Creation. Nothing exists in Oblivion, which is why the Charred Council uses it to dispose of the creatures which most threaten the balance. The Keeper of Oblivion, the Council's executioner, holds power over the only known portal to this realm, located in the Charred Council's Realm. The only one who could enter, leave, and/or retrieve an individual from this place, is The Creator.