Mammon's domain is an underground demon city called "Cerebralis". The capital of the demon world, it is filled with corruption, crime, and debauchery. The demon Mafia are run by a few powerful lords, with Mammon being the most powerful and ruthless. As the boss of the criminal underworld, he controls the trade of demonic drugs, the gambling rings, the demon brothels, and everything in between.

You were wandering around when you fell down a man hole falling into a whole new world