Orcus, Demon Prince of Traitors, takes the appearance of a hunched, black-skinned humanoid with jutting lower fangs, bat-like wings, a tail, and short horns. The story goes that he was originally a fire giant and helped Surtur in his creation of the orcs, who bear his name. When he tried to betray his master and take control of the army, however, he was discovered and killed. So powerful and skilled at betrayal was he, however, that his spirit overthrew the original Lord of Betrayal and took his place. In the South he is called Ashmogh.
His are the souls of those who betrayed the trust of others, the oath-breakers and back-stabbers.
His followers are sanguine demons that resemble red or black-skinned orcs with wings, many small horns, and long tusks. They favor long daggers as weapons and are masters of stealth. They are worshiped by numerous orc tribes. The followers of Orcus whisper into the minds of mortals, goading them into betraying even their own friends and family at every turn. They are master assassins and favor assassins as their mortal allies (and victims).
Demon-kin spawn of Orcus's followers look much like their parents. They are habitual traitors and cannot be trusted to remain loyal to anyone, and they encourage treachery in others.