These are the most dangerous of the demon empire and to encounter one is extremely hazardous. They are fallen Seraphim, and are often times referred to as Servitors. Be very careful if you see one of these, for they are responsible for things like spontaneous human combustions, and demon posessions. Next, are dangerous demons called Illi. These, to be specific are tall humanoid like creatures that are covered completely in shaggy brown fur.
Males have horns like a steer, females have none.
Extremely violent creatures,and powerful to match. They prefer to be left alone, however. Usually they don't attack humans, but when they do, it is not likely one would survive. These are fallen Cherubim, and do still retain most of their original virtues. Not wise to cross one.