Types of common Demons.

Incubus - A demon that takes on a male form. This demon preys on sleeping women. Much like its female counterpart, the Succubus.

Djinn - Can also be called Jinn or Genie. It is a creature that lives in a parallel universe. This demon comes from an Arabic background, and is believed to often harass humans or possess them for the demons own personal gain. Another thing I found interesting is they are believed to be judged just like us on the day of judgment.

Ifrit - A supernatural creature that are a type of Djinn (infernal Djinn). They are an enormous winged creature of fire said to be male or female.

Succubus - These demons are the women form of an Incubus. Said to be highly attractive, they lure men in there dreams as they need to draw energy from them to sustain themselves.

This is just brushing the surface of the world of demons. More to come on these evil entities throughtout the week.