The Brothers of Livos are a fanatical warband of Chaos Space Marines of unknown origin and Founding. Corrupted beyond recognition, these once-proud warriors are sworn to the service of the Dark Gods, and allow the daemons of the Warp to possess their superhuman Astartes bodies. As a result, this warband fields an unusually large number of Possessed Chaos Space Marine squads. The Brothers of Livos see the Possessed as superior to normal Chaos Space Marines and pledge themselves fully to the service of Chaos, becoming willing hosts to these immaterial creatures.