Demons

The demons of Hades are foul, malicious creature who live to torment mortal beings. They delight in making others suffer and engage in torture, murder and any foul deed that will bring about suffering or chaos. Demons originate in another dimension called Hades which is often associated with fire and brimstone. They are often targets of summoners like the Baal-Rog (pictured above).
The Demons have an ongoing feud with Deevil. The Two sides have thwarted each other's efforts for over two millennium. They will attempt to usurp assets from each other through treachery and outright war, but also interfere with the other's plots involving the affairs of mortals. This might even result in aiding heroes (who may knowingly or unknowingly) assist in their plans.
The Ancestors intervened when a conjunction opened a means for demons to enter other dimensions in large numbers. One such force assaulted a temple which contained the intact Orb. A demon attempted to snatch the orb only to be intercepted by Huang Feihong resulting in the orb splitting into many pieces. Later Professor James Short and Hadley Messer observed the same Baal-rog under the service of a Summoner.