Devils are the fiends who rule and maintain the Nine Hells, the dark domain of Asmodeus. They are creatures of remarkable cruelty and evil, bound only by their kind’s honor codes and strict legal system. They come in many shapes and sizes, but almost all devils have the same basic shape: a humanoid form with sharp horns, leathery wings, and a forked tail. It is from them that Tieflings trace their lineage.
When devils cross into the mortal world, they seek to persuade or deceive mortals into accepting their diabolical bargains. A devil never lies, but will twist the truth as far as it needs to in order to get a contract signed. Once the deal is struck, the power of Asmodeus binds it, ensuring that both ends of the bargain will be met, or else terrible consequences will follow.
In the Nine Hells, devils are responsible for imprisoning and torturing the damned souls they have claimed from the mortal world. They have a strict hierarchy of lesser and greater devils, each with different powers and responsibilities. All are overseen by the archdevils, each of whom rules one of the nine layers of hell. The archdevils, though ambitious and conniving, are themselves subject to the will of Asmodeus, who has direct and indirect control of every devil in existence. Failure is punished with demotion. Rebellion is punished with far worse.