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They sailed to the region of the Gerasenes, which is across the lake from Galilee. When Jesus stepped ashore, he was met by a demon-possessed man from the town. For a long time this man had not worn clothes or lived in a house, but had lived in the tombs. When he saw Jesus, he cried out and fell at his feet, shouting at the top of his voice, ‘What do you want with me, Jesus, Son of the Most High God? I beg you, don’t torture me!’ For Jesus had commanded the impure spirit to come out of the man. Many times it had seized him, and though he was chained hand and foot and kept under guard, he had broken his chains and had been driven by the demon into solitary places.

LUK8 26-29 (NIV)

Basic Information

A Demon is an evil spirit from mythology, folklore or religion.


Demons could look like anything. If you examine the paintings of Hieronymus Bosch, for example, you'll see that his demons are downright surreal. Other old depictions often give them cloven hooves and/or fur from the waist down, like a Satyr. Depictions of demons can run the gamut from humanoid to angelic to eldritch abomination.

According to the “confessions” of those who have been tortured into "admitting" they are witches (and/or had sex with a demon), demons often have icy cold bodies, black skin, and weigh more than humans. If such Demons also sometimes appear as animals, usually all black specimens, such as the traditional black cats as a Witch's Familiar. (Of course, confessions given under duress of torture might not have any truth to them.)

A lot of movies and tv shows depict them with horns, wings, and claws. Often the body is an odd color, like bright red, deathly gray, or lustrous black. When it's gray, they look a little reminiscent of medieval gargoyles. Most of the demons on Buffy the Vampire Slayer and it's imitators are pretty much Rubber Forehead Alien or People In Rubber Suits.

It's also pretty common to see Demons depicted as looking like, or inhabiting humans. Due to tropes like Evil is Sexy and Horny Devils, this will often result in a demon that wears a slinky dress, S&M leathers, or a stylish business suit. When angered or on the prowl, however, they may manifest fangs or femme fatalons, or just Glowing Eyes of Doom. See Glamour Failure for more ideas on demons that can almost pass for human.


With or without wings, demons are often depicted as being capable of flight. As a spirit, they may be able to turn Invisible or Intangible. Many demons have potent combat powers, sometimes including pyrokinesis (see also hellfire). But the most universal power ascribed to demons is the ability to tempt, seduce, influence or possess. Some can grant wishes, or bargain for power, but there's always strings attached.

Demons in Religion:

In Christian Demonology, a Demon is specifically a Fallen Angel. Lucifer rebelled against heaven, and was cast down by the armies of God (which were lead by the Archangel Michael). In the New Testament, Jesus drives out demons left and right. In more recent times, mere mention of the name of Jesus is often depicted as enough to at least force a demon to reveal itself, if not flee. “The Power Of Christ Compels Thee” is a useful (and memorable) line to insert into your game.

Of course, if a PC is going to do this, some measure of religious faith (perhaps even true faith) may be a good idea:

Seven sons of Sceva, a Jewish chief priest, were doing this. One day the evil spirit answered them, ‘Jesus I know, and Paul I know about, but who are you?’ Then the man who had the evil spirit jumped on them and overpowered them all. He gave them such a beating that they ran out of the house naked and bleeding.

ACT19: 14-16 (NIV)

The term demon predates Christianity by several centuries, however, and did not always mean what it does now. Demons fall into two categories in the Hebrew Bible, the se'irim and the shedim. The term “demon” was also employed by Hesiod, Plato, and Xenocrates to refer to various spirits and weaker gods (the actual Greek word daimon meaning a spiritual being without indicating any particular moral affiliation). Some elements of the demon concept in Judaism and Christianity originated in Zoroastrianism. In addition, many of the demons mentioned in religious works of Judaism and Christianity share the names of various gods of other religions and mythologies.

Demons and Devils:

In some settings, the term “Demon” and “Devil” are interchangeable, though often The Devil is reserved for Lucifer or a similar Ultimate Evil.

In settings with a Multiverse full of numerous Planes of Existence, and/or systems that care a lot about Character Alignment, you may find a functional or thematic difference between Demons and Devils. In such a case, often the Devils are the Legions of Hell, a Lawful Evil army in the service of Satan, in contrast to the Chaotic Evil demons. Another fairly common take is that devils are focused on evil, whereas demons are focused on chaos.

Non-Evil Demons

Lately, some media (Buffy, for example) have popularized the notion of a Demon not necessarily being evil. These recent films and shows are not the originators of such a concept, however, as both Hesiod and Shakespeare depicted some “good” demons. The terms Daemon, Daimon or Eudaimon is sometimes used to refer to such spirits, to distinguish them from the fallen angel types. However, Warhammer Fantasy and Warhammer 40k use Daemon to mean Demon (or perhaps Demon In Space), so you can't always assume the alternate spelling actually means a darned thing (etymologically, daemon is simply the Latinized version of daimon).

See Also:

Interpretations and Classifications

Demon subtypes

Demon-Related Tropes

Demons In Science, Psychiatry, and Philosophy

The demon is sometimes used as a concept, metaphor, or thought puzzle in scientific fields.

Demons in the News

Miscellaneous Links


Game and Story Use

  • Demons make perfect villains - there's no doubt (in most settings) they're evil, and they come with a pretty wicked back story. May serve as the Big Bad, or a conjured demon may be The Dragon.
  • Remember that a demon need not limit itself to aiding one side - it's quite capable, and indeed may prefer to offer someone assistance with problems of its own making - for example to buy the soul of a tyrant in return for putting him in power and then buy further souls amongst those resisting his oppression. The mysterious help you get taking down the BBEG may not be from the good guys. After all, the demon already owns the BBEG's soul - the sooner you kill him, the sooner it collects… and once you've come to rely on your mysterious ally…
  • In the same vein, a demon may be quite happy as an enigmatic minion … this may be particularly true of some kinds of familiar.
  • Demonic Possession makes it easy to insert a misleading villain that is not what he seems. Either an ally who gets possessed mid-campaign, or an obvious villain who looks like one creature or trope, but has a diabolically sinister secret.
    • With the right players, you could even have a PC who starts possessed.
    • See also the episode of Joss Whedon's Angel in which possession turns out to be the least of the "victim"'s problems…
    • The demon - or possessee - may also not be the obvious person and may take a relatively low status role (even that of a prisoner or slave) and run higher profile players via mind control.
  • When backed into a corner, some PCs might be willing to deal with the devil. Unless the game has cheap resurrection, there might not be any disadvantage to the players for selling their characters souls.
    • On the other hand, a sneaky GM may just figure out how to make the drawbacks kick in while you're still alive.
    • Deadlands combines the resurrection with the deal with the devil. Sometimes a dead hero comes back as a Harrowed, a sporadically-possessed form of undead. You still get to play the character, but there's a constant struggle for control.
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