90482 Orcus given the designation S/2005 (90482) 1 before later being named "Vanth". It orbits Orcus in a nearly face-on circular orbit with an eccentricity of about 0.007, and an orbital period of 9.54 days. Vanth orbits only from Orcus and is too close to Orcus for ground-based spectroscopy to determine the surface composition of the satellite. Mike Brown suspects that like the Pluto–Charon system, Orcus and Vanth are tidally locked. Vanth does not resemble known collisional satellites because its spectrum is very different from that of its primary, and it may be a captured KBO. Vanth could also have originated as
Orcus (Dungeons & Dragons) promise that his legions will attack Demogorgon, claiming that "I will be there to win your battle for you!" In the adventure "Prince of Demons" in "Dungeon" #150, Orcus commits four legions of 25,000 assorted demons and undead to the invasion of Gaping Maw, including his personal legion that has never been defeated in battle. He leaves command of these legions to his generals, as he desperately wants to be the one to defeat Demogorgon personally, to gain his power and hope to become a god. Orcus arrives in Gaping Maw at the same time the player characters invade, and