List of Chaos Space Marine Warbands - B: NameOriginFoundingSummaryBaleful EyeUnknownUnknownThe Baleful Eye is a Chaos Space Marine warband that has risen to prominence within the Screaming Vortex within the Calixis Sector. These piratical raiders are known for ambushing their prey and preferring rapid and brutal boarding actions. Their ships are adorned with cruel spikes and trophies of past conquests, while the red and midnight blue hull prominently displays images of a great glaring yellow eye. The raiders never leave any survivors and their victims' corpses are said to have looks of stark terror on their faces. What they witnessed can only be speculated as every video log, pic-catcher, and eyeball is removed from the target vessel.Beasts of AnnihilationAnnihilatorsUnknownThe Beasts of Annihilation are a warband of Chaos Space Marines that were once the Loyalist Space Marine Chapter known as the Annihilators. 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.Berserkers of KharadonUnknownUnknownThe Berserkers of Kharadon were once a Loyalist Space Marine Chapter which disappeared from the Imperium of Man from 153.M34 to 184.M39. During these five millennia the Berserkers of Kharadon turned to Chaos, and the bloody worship of Khorne, rechristening themselves the Skulltakers. With the Styx-class Heavy Cruiser Blood Dawn leading their fleet as its flagship, the Skulltakers have raided and plundered across the galaxy, killing indiscriminately and gathering skulls in the name of Khorne.Berserkers of SkallathraxWorld EatersUnknownThe Berserkers of Skallathrax are a large warband of Chaos Space Marines drawn from the World Eaters Traitor Legion. There have been multiple encounters throughout the Segmentum Obscurus between the forces of the Imperium of Man and this vicious warband of Chaos Space Marines dedicated to the Blood God Khorne.Betrayers of PainUnknownUnknownThe Betrayers of Pain are a warband of Chaos Space Marines of unknown origin. Almost nothing is known about them in current Imperial records.Bilious OnesDeath GuardFirst FoundingThe Bilious Ones are a warband or vectorium of the Death Guard Traitor Legion's 4th Plague Company. They are commanded by a Death Guard Sorcerer and are one of the few Death Guard warbands which likes to enter battle amidst living carpets of Nurglings, the Lesser Daemons of the Plague God Nurgle. Little else is known about the Bilious Ones in current Imperial records.Bitter SonsIron WarriorsFirst FoundingThe Bitter Sons was a warband of the Iron Warriors Traitor Legion. The Chaos Space Marines of the Bitter Sons were deployed to the Macragge System as part of the Ultramar Campaign of Abaddon the Despoiler's 13th Black Crusade in 999.M41.Black Brethren of AyreasBlack LegionUnknownThe Black Brethren of Ayreas are a warband of Chaos Space Marines drawn from the Black Legion who follow the Chaos Champion Ayreas. They were among the Forces of Chaos and the 11 warbands and Renegade Chapters of Chaos Space Marines who participated in the the infamous Siege of Vraks (813-830.M41).Black FeastWorld EatersUnknownThe Black Feast is a warband of Chaos Space Marines that splintered from the World Eaters Traitor Legion. The Black Feast are a cannibalistic sub-sect of the World Eaters who devour the bodies of the fallen after battle as a final mark of disrespect for their weakness. 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.The Black PsalmIllustriansUnknownThe Black Psalm was once a Loyalist Space Marine Chapter of unknown origin and Founding known as the Illustrians. 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 Black Psalm.Black SkullUnknownUnknownThe Black Skull is a Renegade Warband of Chaos Space Marines of unknown origins and Founding. When the Crimson Sabres Chapter began their descent into madness, they were determined to sell themselves dearly, and so, they turned to the Eye of Terror where they planned to die fighting the enemies of Mankind and in doing so reclaim their honour. The planet known as Nebulon was one of the outermost of the planets ringing the Eye of Terror, a world only occasionally veiled within that region. Onto that bleak orb swept the Crimson Sabres like avenging angels. In a twisted land of derelict hives the red-armoured Space Marines hunted and gunned down any quarry they could find. None could stand before them -- none, that is, until the Black Skull renegades emerged out of the stygian depths of the underhive. The two forces clashed, both nigh on Chapter strength, however, only the core of the Black Skull were Space Marines, comprised of turncoats from many disparate Chapters united by their self-serving nature. The remainder of their number were comprised of Chaos Cultists. The Crimson Sabres fought as one unifying force, and were able to overcome the renegade warband.Blades EternalUnknownUnknownThe Blades Eternal 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, and their current status is also unknown, though the Imperial Inquisition has withheld their final judgement on whether or not the Chapter should be considered heretical or extinct until more information is available.The Blades of MagnusThousand SonsUnknownThe Blades of Magnus are a thrallband of Chaos Space Marines dedicated to the Chaos God Tzeentch that was originally formed by members of the Thousand Sons Traitor Legion. Following the destruction of their home world of Prospero at the hands of the Space Wolves and their subsequent flight to their refuge on the Planet of the Sorcerers, the Blades of Magnus began to work in secret to break the bonds between their Primarch and the Chaos God Tzeentch. Though they toiled in secret for many years, their hidden machinations were eventually discovered by the Daemon Primarch, who punished the Blades of Magnus most severely. Blasting them with eldritch power, the Legionaries and Sorcerers of this thrallband were reduced to soulless automatons -- mere vessels for the Crimson King to control -- like puppets by a mad marionette.Blades of RageunknownUnknownThe Blades of Rage are a little known host of Khorne Daemonkin of unknown origin. Their most notable actions occurred in 444.M41, when they joined their fellow Daemonkin host, The Wrath, joining the Daemon Primarch Angron's attack upon the Imperial Hive World of Armageddon.Blades of the DespoilerBlack LegionUnknownThe Blades of the Despoiler were a warband of the Black Legion dedicated to the service of Khorne. They were eradicated by the Battle-Sisters of the Order of the Ebon Chalice at some point during the Era Indomitus even as their path of slaughter took them on a course headed directly for Holy Terra.Bleak BrotherhoodWarp Ghosts (Unconfirmed)UnknownThe Bleak Brotherhood is a warband of Chaos Space Marines whose origins remain unknown although i´t may possibly be a splinter warband of the Warp Ghosts. The Chaos God to whom it offers their allegiance, if any, is unknown.Bleeding EyeNight LordsUnknownThe Bleeding Eye is a particularly large Raptor Cult that often acts as mercenaries. It is known to operate in cells across several sectors of the galaxy, allying itself with other Chaos Space Marine warbands. The Bleeding Eye is known for taking part in various acts of cannibalism, eating the remains of their fallen enemies.Blood StormUnknownUnknownThe Blood Storm was 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.Bloody PathWorld EatersUnknownThe Bloody Path is a warband of Chaos Space Marines that splintered from the World Eaters Traitor Legion. Having waged a century-long war against Orks of WAAAGH! Killstomp, the Blood Path is known to proclaim its victories with tassels of the green of Ork flesh. Most recently, during the 13th Black Crusade, this warband fought alongside the monstrous Butcherhorde, a conglomeration of multiple World Eaters warbands led by the infamous Khârn the Betrayer, who led them in the slaughter of the Imperial world of Amethal in the Diamor System against the valiant defence of the Blood Angels Space Marine Chapter.The Blighted ClawSanctors of TerraUnknownThe Blighted Claw were once a Loyalist Space Marine Chapter of unknown origin and Founding known as the Sanctors of Terra. 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 Blighted Claw.Blood DisciplesEmperor's Wolves (8th Company)UnknownThe Blood Disciples are a warband of Chaos Space Marines who were once the 8th Company of the Emperor's Wolves Chapter of Loyalist Space Marines. During a mission, the 8th Company made a Warp Jump that proved unsuccessful, causing them to become lost in the Immaterium for decades. During this time the 8th Company was corrupted by Chaos and emerged back into realspace decades later as the vicious warband of Chaos Space Marines known as the Blood Disciples. Because the 8th Company of the Emperor's Wolves had originally been designated as one of that Chapter's assault companies, the Blood Disciples possess an unusually large number of Chaos Raptors, the Chaos Space Marines' equivalents of Assault Marines. Due to their chosen name, the warband is very likely dedicated to the service of the Blood God Khorne, but this is not confirmed and the Blood Disciples might also serve Chaos Undivided. Nothing else is known about the warband in Imperial archives.Blood GorgonsUnknown21st FoundingThe Blood Gorgons are a Renegade Chapter of Chaos Space Marines that primarily raids the Baston Sector of Imperial space. Formerly a Loyalist Space Marine Chapter, the Blood Gorgons were created during the 21st Founding, known as the "Cursed Founding", sometime in the 36th Millennium shortly before the start of the Age of Apostasy. Led by their Chapter Master and later Chaos Lord Gammadin, who had been the Blood Gorgons' leader from the time of their Founding until the day when the Imperium declared them Renegade and Excommunicate Traitoris, a mere six decades later, the Chapter ultimately fled into the Eye of Terror after swearing themselves to the service of Chaos. They are an unusual Chapter of Chaos Space Marines, as every Astartes is ritually bonded to another through the use of a Chaotic ritual. The Blood Gorgons, who value their freedom and independence above all else, refuse to swear allegiance to any patron Chaos God, preferring to serve Chaos in general in the form of Chaos Undivided.Blood Legion of KhorneWorld EatersUnknownThe Blood Legion of Khorne is a warband of Khornate Berserkers drawn from the World Eaters Traitor Legion. Their most notable campaign was the assault on Lorn V where they struck a deal with the Ork Warboss Gorgutz. The Blood Legion of Khorne eventually came into conflict with the Orks over the remnants of an ancient Imperator-class Titan.Blood WolvesSpace WolvesUnknownThe Blood Wolves are a warband of Chaos Space Marines that were once a Great Company of the Loyalist Space Marine Chapter of the feral Space Wolves. Following their corrupted leader, Wolf Lord Svane Vulfbad into damnation, these once-proud warriors are now sworn to the service of the Blood God Khorne.BloodbornUnknownUnknownLed by the Iron Warriors Warsmith Honsou, the Bloodborn were a massive Chaos army of close to 17,000 Chaotic warriors, comprised of various Chaos Legions and Warbands, sworn in blood to his cause. Honsou led his massive Chaos army into the Realms of Ultramar, intent on wreaking terrible vengeance upon his most hated foes, the Ultramarines, following the destruction of most of his Grand Company on the Iron Warriors' Daemon World of Medrengard, by the formerly banished Ultramarines' Captain Uriel Ventris and Sergeant Pasanius Lysane. The name of this massive army was given by Honsou's erstwhile ally, the Daemon Prince M'kar the Reborn, much to the disgust of the Warsmith. Ultimately, Honou's quest for vengeance was foiled, but it would take another six months of intense fighting before the taint of the Bloodborn's presence was expunged.BloodlordsSpears of OlympusUnknownThe Bloodlords were once a Loyalist Space Marine Chapter of unknown origin and Founding known as the Spears of Olympus. 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 Bloodlords.Brazen DrakesUnknownUnknownThe Brazen Drakes are now a Renegade warband of Chaos Space Marines called The Shriven that joined the Black Legion. Their genetic origin and Founding is unknown. They are the first known Chapter whose Primaris Space Marine reinforcements also turned against the Imperium and went Renegade.Brazen GuardUnknownUnknownThe Brazen Guard 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 Brazen Guard, by the mysterious Legion of the Damned.Bringers of DecayBlack LegionUnknownThe Bringers of Decay are a special formation of Chaos Space Marines found within the Black Legion who are wholly dedicated to Nurgle. The Plague God has a strong following within the Black Legion; his putrid touch is evident throughout the ranks of its warriors. Under the dominance of the Chosen of Abaddon lieutenant Skyrak Slaughterborn, the current Lord Corruptor, the Nurglites have converted many to their cause. In battle, the Bringers of Decay are Abaddon's plague carriers and heralds of contagion, often appearing before other warbands of the Legion to sow infection and sickness amongst the foe. This could also be why many other warbands of the Black Legion will have little to do with the Bringers of Decay, repelled by the blessings of the Plague God they bear, and the pervasive stench that follows them.Bronze GorgonsUnknownUnknownThe Bronze Gorgons 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 Crystal Wyverns.Brotherhood of BloodUnknownUnknownThe Brotherhood of Blood is a Renegade warband of Chaos Space Marines of unknown origins and Founding. It is known to have laid claim to the contested world of Brigannion Four, which lies just outside the Eye of Terror, close to the stable warp route known as the Cadian Gate. This world is an unimaginably vast fortress of corrupt magic and machine, made all the more impregnable by its current ruler, Manneus Drath of the Iron Warriors Traitor Legion. The Brotherhood of Blood constantly vies with some of the original Traitor Legions who have also laid claim to this contested world, including the Night Lords, Death Guard and the Black Legion, as well as another warband, the Sons of Hate.Brotherhood of DarknessNight Lords (Unconfirmed)UnknownThe Brotherhood of Darkness is a warband of Chaos Space Marines of unknown origin and allegiance, though it may be related to the Night Lords Traitor Legion due of their similar iconography.Brotherhood of DustThousand SonsUnknownThe Brotherhood of Dust was a large Renegade warband created by the Chaos Sorcerer Amon after his exile from the Thousand Sons Traitor Legion, following his involvement with Ahriman and the casting of the Rubric of Ahriman, which was cast in order to halt the rampant genetic mutation of their former battle-brothers. This spell was only partially successful, resulting in the majority of their battle-brothers' flesh being turned into dust -- effectively turning them into mere automatons, known as Rubric Marines. This warband mainly consisted of exiled Thousand Sons but also consisted of disparate Chaos Space Marines from various Renegade Chapters and warbands. Amon's primary aim was to ease the pain of the Thousand Sons Legion that the Rubric of Ahriman had caused by destroying his former legion. To accomplish this goal, he needed to reverse the Rubric in order to kill them. To do that he needed Ahriman's knowledge of it. Chasing Ahrimn throughout the galaxy, he eventually took the powerful sorcerer as his prisoner. But Ahriman's allies freed him, which allowed the powerful mage to defeat thirty-six of Amon's Chaos Sorcerer allies psychically. He then took direct control of Amon's entire army which was comprised of Rubric Marines. Amon challenged Ahriman to a duel to the death and very nearly succeeded in killing his former friend. But Amon was eventually undone, when Ahriman called upon the power of the Rubric, awakening it within Amon's body, and turning his flesh into dust. The victorious Ahriman took Amon's Power Armour and assumed leadership over the powerful fleet and armies of the Brotherhood of Dust.Brotherhood of LetheCrusaders of DornUnknownThe Brotherhood of Lethe is a warband of Chaos Space Marines. They were once a Loyalist Chapter of Space Marines of unknown origin and Founding, known as the Crusaders of Dorn. 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 Brotherhood of Lethe.Brotherhood of the PlagueUnknownUnknownThe Brotherhood of the Plague is a Chaos Space Marine warband of unknown origin. This warband's corrupted Astartes are ardent followers of the Plague God Nurgle. The Brotherhood of the Plague's most notable action occurred in 104.M35, when it took part in the notorious Bloodpox Campaign, fighting alongside the Death Guard Traitor Legion against the Dark Angels Space Marine Chapter. The twelfth Supreme Grand Master of the Dark Angels Chapter, the esteemed Armaros, contracted the loathsome pox known as Nurgle's Rot. This resulted in his rapid deformation, and so, Armaros passed on the leadership of the Chapter and voluntarily committed suicide by stepping into The Rock's reactor chamber so as to prevent the contamination from spreading.Brotherhood of Unclean MercyUnknownUnknownThe Brotherhood of Unclean Mercy are a Chaos Warband of Chaos Space Marines dedicated to the Plague God Nurgle. Free to act according to their own plans, the members of the Brotherhood of Unclean Mercy were able to seize upon an opportunity of random chance and infect the entire store of supplies in a passing merchant fleet. Thus enhanced, the cargo spread the Stenchgut Plague to an entire continent on Xurunt.Brothers of DarknessUnknownUnknownThe Brothers of Darkness are a Renegade Space Marine Chapter of unknown origins or Founding. This Renegade Chapter is known to still rule over the home world gifted to them by the Imperium. There is little else known about this obscure warband in current Imperial records.Brothers of LivosUnknownUnknownThe Brothers of Livos are a fanatical warband of Chaos Space Marines that are highly devoted to the Ruinous Powers, willingly offering themselves up to the Chaos Gods for possession by immaterial beings. Members of the Brothers of Livos often become Possessed Chaos Space Marines, which is viewed as a great honour within the warband.Brothers of RetaliationThousand Sonsca. 014.M32The Brothers of Retaliation are a Chaos Space Marine warband, led by Chaos Lord Laudren Thalarn, that was created after leaving the Planet of the Sorcerers a thousand standard years after the death of Horus. The Brothers' sole purpose is to seek revenge against the Imperium for the cruel fate inflicted upon the Thousand Sons and their homeworld of Prospero during the opening years of the galaxy-wide conflict known as the Horus Heresy.Brothers of the AnvilUnknownUnknownThe Brothers of the Anvil 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. During their sojourn into the Eye, they landed upon an ancient Eldar Crone World and were captured by xenos Kabalites. After enduring horrific torture at the hands of their Dark Eldar captors the remains of the Brothers of the Anvil slaughtered their way back into realspace, unrecognisable as a formerly loyal Chapter. Now a warband known as the Deathmongers, they have a brutal reputation for causing wanton destruction during their campaigns even to the point that they will cede a possible victory for the opportunity to cause more death and devastation for its own sake.The BrokenViridian ConsulsSecond FoundingThe Broken were once a Loyalist Second Founding Space Marine Chapter of unknown origin known as the Viridian Consuls. 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, the Viridian Consuls had become the warband of Chaos Space Marines known as The Broken.ButcherhordeWorld EatersUnknownThe Butcherhorde is a warband of World Eaters Chaos Space Marines. Led by the infamous Khârn the Betrayer, the Butcherhorde was formed originally from the frenzied Khornate Berserkers who followed The Betrayer. Over time, as Khârn has slaughtered his way across the galaxy, the warband has grown to encompass all manner of Khornate devotees. These include ordinary Chaos Space Marines, cultists, Daemon Princes, and Daemon Engines.