Goblin guy. Has an in-depth knowledge of curses, and used that to strategically stack them on himself to come out with mostly benefits. He also creates and distributes weaponized curses among the underworld. Don't look at his face. They say it'll stop your heart.
Orc lady. One of the big four above-ground intermediaries to the demon mafia. Enjoys her tea. Doesn't enjoy having her business disrupted by large unforseen structural changes caused by demon himbos. But who does, really?
Dwarf guy. Another of the big four. He's got a lot of experience and charisma to back him up in the drug trade. He's missing part of his face. What a weirdo!
Demon guy. The Lion, the absolute top of the food chain in the Underworld. Responsible for the mob's takeover, and has been living comfortably with the entire country under his thumb for years. He knows the upper world won't do anything about it, so he does as he pleases.