What if demons live in the mortal realm?

[b-dog]

I was reading about how Satan was not stuck in Hell but roamed the Earth like a hungry lion in search of souls to devour. So it made me think what if the demons in dungeon fantasy were living on the Earth in the mortal realm instead of Hell? In this scenario the demons would have their amulets secured in the Earth and they would likely live deep underground and possibly connect to dungeon levels and temples. Eventually demons would be sent to Hell but in the mean time they would be amassing armies on Earth to attack the forces of good. Demons would not want to go to Hell to suffer forever because Hell is a punishment that they want to avoid and that would be why they would be trying to overthrow the Divine so that they would not have to be sent to a place of eternal suffering. When a demon is slain then it must go to Hell and suffer greatly until it is able to escape back into the mortal realm. So basically a demon on Earth would create a deep underground realm on Earth to secure their amulet and also to make a safe place.