The Bolvag (orc."Curse") was an Orc-Demon created by Sauron in the Second Age. The Bolvag served as Mordor's highest ranking orcish priest and sorcerer.A descendant of the father of the breed of Orcish mages and shamans,the acting Bolvag of the mid-Third Age was, like most of his forebearers half Demon, Half-Orc, half-Undead, half something undefineable.He bore a title that had been passed down on him by every acting High-Dush bred by sauron.As the old Bolvag died Sauron created himself a new one.