The existence of Hell is a Reality Meme (Onton) which has taken hold in multiple universes across many cultures. For some it is just a place where a soul goes after death, for still others it is a place of punishment. For some others it is where the information layer of sentients is returned to the information layer of the universe much as their atoms rejoin the humus and detritus of their world.
What becomes clear is that the experience of Hell often coincides with what the individual truly believes should happen to them after death. Some may be doomed to wander endlessly through scenes in their lives where they experienced regret and others may be burned to ashes every day. None of these represent an objective view of what should happen to those who are virtuous or those who are dastardly.
Hell may be occupied by Angels or Devils and may have other entities stalking the halls and barren lands.