Demons are creatures of pure evil and raw elemental Power, senselessly destructive, thralls of the Dark Lord who seeks to corrupt and destroy all that is good in Mythandar. Demons are not native to the mortal world. They are denizens of the Infernal Plane, or the Netherworld, which lies "below" this one. There, Demon Lords rule hordes of lesser demonkind in constant strife against each other.
Demons vary in Power, appearance, abilities and intelligence, from lesser imps driven by the basest evil instincts to nearly god-like Demon Lords who plot and scheme to increase dominion and influence. They do not have ethical free will. There are no "good" demons, for goodness is not within their natures. They are incapable of love, compassion, creativity or any aspect of kindness. Demons are immortal, though not immune to physical destruction. Over time, lesser demons may grow in Power, gaining position and influence and challenging those above them. Some sages argue that there is no upper limit to a demon's Power and that the Dark Lord himself is merely the latest Demon Lord to attain god status.
*A possessed individual may be freed by a Ritual of Exorcism performed by a priest (Power vs. Power).
Fantastic or higher Demon Lord
There are NINE DEMON LORDS, the greatest of their kind second only to the Dark Lord himself in Power. Their names are known and recorded in various ancient sources and it is said the merely speaking the name of one of the Nine may bring it to snatch a person away to the netherworld. Sages believe it possible for a demon to rise in Power to that of a god, thus becoming the Dark Lord. This may have happened many times in the past and would explain the changing nature of evil in Mythandar.