Originally enslaved to serve as the titan's hounds, they were used to police the use of arcanemagics. Sacrificial magic was considered the greatest violation of life and they were attuned to instantly punish those who delved into such sorcery. Following his betrayal, Sargeras recruited them to his cause; with modern ered'ruin referring to such as freedom from slavery.
Role in Burning Legion
They serve as shock troops and enforcers. Powerful and deliberate, these winged aberrations are known across the cosmos for their brutality. The doomguard are utterly devoted to their pit lord masters and revel in the destruction of worlds.
The fearsome doomguard served as Archimonde's personal escorts. Although they are often called upon to perform a number of duties for the Legion, their loyalty laid with him alone. Though ered'ruin had still served the Burning Legion during the invasion of Outland, Kanrethad Ebonlocke said the ered'ruin hadn't had a master since Archimonde's defeat. He intended to become their new master.