Brotherhood of Darkness

The Brotherhood of Darkness are a warband of Chaos Space Marines of unknown origin and allegiance, though they may be related to the Night Lords Traitor Legion, due to their their similar iconography. At an unknown point after the Horus Heresy the Brotherhood of Darkness assaulted an Imperial astropathic relay station near the Eye of Terror, alongside the Chaos Sorcerer Ahzek Ahriman during his exile from the Thousand Sons Legion. They burned the relay station’s astropaths alive and massacred the civilians aboard.