Demons are spiritual entities that originate not from the Shadow, or even the supernal realm of Pandemonium. Rather, they come from the enigmatic domain of Hell, a place of horror and indescribable evil that even the native demons hate to exist within. This leads them to constantly attempt at escaping, while also trying to damn the souls of the living and alter the material world to fit their idea of paradise.
The are several categories of demon:
All demons, no matter what rank they are, have what is called a malapraxis.