List of Chaos Space Marine Warbands - A: NameOriginFoundingSummaryAbrial's ClawUnknownUnknownAbrial's Claw is a warband of Heretic Astartes that took part in the Scouring of Makenna VII. It was once led by the Chaos Lord Abrial Shard, who relinquished control of the warband to the exiled Iron Warriors Warsmith Balduran during that campaign. Since that time, the warband has become infamous across many sectors of the Imperium.Adharon's ReaversSons of GuillimanUnknownAdharon's Reavers are a vicious warband of Chaos Space Marines who were once largely members of the Sons of Guilliman Chapter of Space Marines. This warband operates as a small renegade corsair group under the former Sons of Guilliman Captain Adharon. This particular Chaos Space Marines warband was first identified by the forces of the Imperium of Man during the Siege of Vraks in 813.M41 when they participated in the defence of that world from an Imperial invasion.Altar BrethrenUnknownUnknownThe Altar Brethren were once a Loyalist Space Marine Chapter of unknown origin and Founding. They were corrupted after entering the Eye of Terror in 321.M37 as part of the Abyssal Crusade. It is unknown what they endured during their sojourn into the Eye, but by the time they made their way back into realspace, they had become the warband of Chaos Space Marines known as the Iconoclasts.Angels ApocryphaUnknownUnknownThe Angels Apocrypha were a warband of Chaos Space Marines of unknown origin or Founding. Little else is known about this particular warband in official Imperial records. Recently, they took part in the Cholercaust Blood Crusade in the 41st Millennium. The Cholercauset suffered a total defeat and all in its ranks were slain, including the Angels Apocrypha, by the mysterious Legion of the Damned.Angels of EcstacySons of UlthunasUnknownThe Angels of Ecstasy are a Renegade Chapter of Chaos Space Marines devoted to the Chaos God Slaanesh who were once the Loyalist Space Marine Chapter called the Sons of Ulthunas. They rebelled against the Imperium of Man during the action remembered as the Ganymethian Betrayal. It is unclear if they are merely Renegade Space Marines who refuse to recognise Imperial rule or are now fully committed to the service of the Prince of Pleasure as Traitor Marines, though their increasingly mutated appearance and Chapter colour scheme would indicate that this is firmly the case.Angels of FlameUnknownUnknownThe Angels of Flame are a Renegade Chapter of Chaos Space Marines about which little is known in Imperial records. The Angels of Flame Space Marine Chapter only recently turned Renegade in 999.M41, when they were sent on an extended mission of reconquest to the rim of the galaxy near the Ghoul Stars. Even now, Planetary Governors, Imperial Inquisitors and Imperial military commanders in the region wait with trepidation for the bloodshed that will surely follow when they next make an appearance as the newest servants of the Dark Gods.Angels of PainUnknownUnknownThe Angels of Pain are a Chaos Space Marine warband of unknown origin and Founding. Nothing is known about this warband except for their raid and destruction of the colony station of Trantarion in the Acteron Sector.Angron's ChosenWorld EatersUnknownAngron's Chosen are a warband of Chaos Space Marines drawn from the World Eaters Traitor Legion. The warband is composed entirely of Khornate Berserkers. They are notable for having taken part in the First War for Armageddon.Angron's FuryWorld EatersUnknownAngron's Fury is a warband of Chaos Space Marines that splintered from the World Eaters Traitor Legion. Little is known about this Khornate warband other than that they have many Possessed amongst its ranks, whose spines and claws often manifest as living steel. Most recently, during the 13th Black Crusade, this warband fought alongside the monstrous Butcherhorde, a conglomeration of multiple World Eaters warbands and led by the infamous Khârn the Betrayer, who led them in the slaughter of the Diamor System upon the Imperial world of Amethal, against the valiant Blood Angels Space Marine Chapter.AnointedWorld EatersUnknownThe Anointed were a warband of the World Eaters Traitor Legion. It was wiped out during the Cholercaust Blood Crusade in the 41st Millennium.Apocalypse CompanyUnknownUnknownThe Apocalypse Company is a warband of Chaos Space Marines. Their allegiance to a particular Chaos God is unknown, but it is presumed that they worship Chaos in its Undivided form.Apostles of ContagionDeath GuardUnknownThe Apostles of Contagion are a warband or vectorium of Chaos Space Marines drawn from the Death Guard Traitor Legion that dedicate themselves to the service of the Plague Lord Nurgle. They are a vectorium of the 4th Plague Company, favouring viral bombardment and sorcerous saturation before the battle begins. They march from amidst billowing clouds of corrosive spores and infectious vapours, their enemies screaming and putrefying even as they struggle to fight back. As the Apostles chant the praise of Nurgle, packs of daemons rise from the organic slurry to join the fight, overrunning the enemy with a tide of bloated bodies. The Apostles of Contagion are led by the vile and infamous Death Guard Lord Necrosius, the self-proclaimed "Hand of Nurgle." This Apostles are thought to be responsible for Zombie Plague infestations that broke out across the Imperial Armoury World of Vraks during the Siege of Vraks in 813.M41.Apostles of MinthRasUnknownUnknownThe Apostles of MinthRas are a warband of Chaos Space Marines. They were first encountered by the forces of the Imperium of Man inside the Eye of Terror Warp rift in the 33rd Millennium. Almost nothing else is recorded about them in Imperial records.Argent HammersUnknownUnknownThe Argent Hammers were once a Loyalist Chapter of Space Marines of unknown origin and Founding. They were corrupted after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. It is unknown what they endured during their sojourn into the Eye, but by the time they made their way back into realspace, they had become the warband of Chaos Space Marines known as the Talons of Anathrax, named for the Daemon World of Anathrax where they had been corrupted.Astral BladesUnknownUnknownThe Astral Blades were once a Loyalist Chapter of Space Marines of unknown origin and Founding. In 121.M37, the Astral Blades Chapter was led down the path to Chaos by their prideful Chapter Master, who had been possessed by the Daemon Etherak the Unrepentant. The Daemon's servants used sorcery to possess almost every battle-brother within the Chapter's subterranean Fortress-Monastery one by one, slaughtering those strong enough to resist. As the blood of the last of the fallen was still cooling, the possessed Space Marines plundered the Chapter's gene-seed stores and set off for the Eye of Terror. However, when their Battle Barge, Sword of Stars, reached high orbit, the Grey Knights were waiting for them. In the furious battle that ensued Grey Knights Terminators teleported onto the bridge of the Battle Barge and banished Etherak back into the Warp in the midst of a furious melee. Broken in body and spirit, the Chapter Master of the Astral Blades accepted the Emperor's mercy delivered at the hands of his "saviours".Astral ClawsUnknown10th FoundingThe Astral Claws were once a Space Marine Chapter created during the mid-35th Millennium's 10th Founding from an unknown genetic origin specifically to defend the Eastern Fringes of the Imperium of Man from any Chaos threats spawned by the massive Warp rift called the Maelstrom in the region of the Ultima Segmentum appropriately called the Maelstrom Zone by Imperial astrocartographers. The Astral Claws eventually turned Renegade against the Imperium and initiated the major rebellion and attempt at secession from the Imperium by the Badab Sector appropriately called the Badab War in the late 41st Millennium. Upon losing this conflict to Loyalist Imperial forces, including several other Space Marine Chapters, the surviving Astral Claws were corrupted by Chaos and fled into the Maelstrom. They are currently the leaders of a powerful band of Chaotic pirates and Renegades called the Red Corsairs who present a major threat to Imperial commerce and Imperial worlds in the region.Athkor's DestroyersSons of HorusFirst FoundingAthkor's Destroyers is a warband of the Black Legion led by the Master of Possession Bruakh Athkor.Avenging Sons (3rd Company)UltramarinesUnknownDuring the Helmabad Rebellion sometime in the 41st Millennium, Avenging Sons' Captain Gessart and his 3rd Company turned Renegade whilst fighting in the civil war on Helmabad against a force of Chaos Cultists, who had stirred up a rebellion against the Emperor, to save their own lives when the course of the battle went against them. Killing their Chaplain and those Loyalist Battle-Brothers who would not follow them, the Space Marines of the 3rd Company negotiated with the Traitors for safe passage to their Thunderhawk gunship in return for leaving the Planetary Governor undefended for the cultists to slay. After fleeing the planet, which had been struck by a Warp Storm, the 3rd Company painted over their Chapter badges and other Imperial symbols and set course for the Eye of Terror. It should be noted that Captain Gessart intended to continue fighting for the good of humanity, yet could not remain as part of the Avenging Sons Chapter after he had allowed the elimination of those Space Marines who had refused to abandon the world of Helmabad to Chaos to save their own lives.