Demons

Demons are usually porterayed as red guys/chicks with horns. But think little realistic who would like to look like a whooker in red latex? Demons can be every size, from a little virus to a the Devil himself, but here we don't know what size devil wears. So 1 thing is straight demons aint those red whookers in latex.
Now you see demons can be almost everything you see around you and those mythical creatures as werewolves, vampires, ghouls, even frickin zombies and not to mention hell hounds. Hell hounds are loyal servants to demons who can control them to get what they want like crossroads demon who seals deals for collecting souls and when the time is right the hounds will collect the soul.
Then there are those demons who are afraid of the Devil and want to get him never out of his cell. They are hunted by their onw kind and slaughtered like pigs when they are catched.
Forgot to mention that demons can posess a person. When they leave persons body the body is left like it is, so if you fell 9 stories when you were possesed  you will notice it when demon leaves.
So don't get in the way of any demons or even the Devil.