An evil spirit, which harms
innocent people for their
entertainment/selfish desires &/or who brainwashes others into doing such evil.
(Notes: A demon isn't to be confused with a daemon, which is a usually a benign Greek/Roman divinity, according to mythology.
Demons are formless, nameless and have no divine status. They can come in the form of conscious destructive elements, such as fire, black winds, black holes, dark clouds, tornadoes and hurricanes, which speak.
They continously whisper curses, temptations and words of hatred, (ie. 'You're worthless, etc.). They have the power to make you hallucinate terrorfying
hallucinations.
They work for the evil omnipresent conscious darkness, which speaks, Satan).
'A demon isn't divine (god-like), but monstrous, and the lowest thing in existence-Even all the gods send their demigod
warriors to slay these wretched beasts.'
(Please read my
definition of evil and daemon for more
information).