Hellfire Dimension
The Hellfire Dimension is a plane of reality that is asociated with what are described as demonic forces and hellish versions of the afterlife. In reality, this is a home to unimaginably old beings who exist between infinite realms in the multiverse. The inhabitants generally use their infinite power for cruel and nefarious purposes. When humans ask why they do this, the answer is because "evil" spelled backwards spells "live".