Tenebrous

Orcus is the fictional demon prince, and lord of the undead in many campaign settings for the Dungeons & Dragons fantasy role-playing game. He is named after Orcus of Roman mythology. His symbol is a mace with a human skull as the head. Orcus is one of the most detailed demon lords of the Dungeons & Dragons game and one of a small handful to be detailed in every edition of the game. Orcus was also named as one of the greatest villains in D&D history by the final print issue of Dragon.