Adeptus Custodes



"These men are my bodyguards, their lives forfeit to the guarantee of my physical safety. Of their loyalty to me there shall be no question nor doubt. I, and I alone, shall have the authority to stand in judgement over them. No other commander shall they have in battle nor in service. None shall bar them from me and none shall hamper or stall their mission. So it is decreed!"

- Ancient declaration made by the Emperor of Mankind during the Age of Strife

The Adeptus Custodes, known as the Legio Custodes before the Horus Heresy, is the Imperial Adepta responsible for guarding the Imperial Palace and the physical body of the Emperor of Mankind. It is an elite cadre of genetically-engineered transhuman warriors who are even more potent in combat than the Adeptus Astartes. They are to the Space Marines as the Emperor is to His Primarchs, and it is rumoured that they were created using the Master of Mankind's own genecode. Where Space Marines represent the mass-produced genetic soldiers of the Imperium, the Adeptus Custodes are a force of individual warriors, each a bastion in his own right. These warriors have stood in the presence of the immortal Emperor of Mankind since before the time of the Unification Wars. For ten thousand years and more, the Custodians have stood watch over their lord and master, serving as the Emperor's personal guardians and praetorian bodyguard. During the Great Crusade these resplendent warriors guarded the Emperor wherever He went and swore to give their lives to protect His. After His incarceration in the Golden Throne following the Horus Heresy ten standard millennia ago, they have taken a far more limited role in the Imperium of Man. They almost never leave Terra and only very rarely leave the Imperial Palace as they watch over their recumbent master and patrol the precincts of the Emperor's Palace, ever vigilant of threats. It is only the Adeptus Custodes who decide who may enter the Sanctum Imperialis of the Emperor at the heart of the Inner Palace, and when they may do so.

History
"Only in Death does Duty End."

- First Maxim of the Legio Custodes

The origins of the Custodian Guard are shrouded in myth and legend. The Legio Custodes were the bodyguards and sworn protectors of the Emperor and His chosen emissaries, and when the need arose, His most deadly executioners. Genetically engineered warriors of unswerving loyalty and unshakable purpose, their might and skill-at-arms was greater even than the Space Marines of the Legiones Astartes, while their weapons and wargear were uniquely potent, representing the apex of the Imperium's technology. Their history is a long one, and for centuries they have walked in the Emperor's shadow as His praetorians and the protector of His secrets.

The Firstborn
The Legio Custodes are by many accounts the Emperor's true firstborn, prefiguring even the Thunder Warriors. They are His first genetically-engineered, psycho-indoctrinated warriors, perfected weapons crafted by the Emperor's genius from the dread lore of the Dark Age of Technology. They are in almost every measurable way superhuman: stronger, faster, more acute of senses and more resilient even than the doomed Thunder Warriors or the Space Marines who would follow them, and so far beyond the limits of an unaugmented human as to be almost godlike in comparison. Indeed, only the Primarchs and above them the Emperor Himself exceeds them in corporeal might, and to meet them in open conflict is to court death for human or alien alike.

They are rare creatures, these firstborn of the Emperor's gene-craft. Such was their psycho-physical design, and the intricacy and sophistication of the gene-craft involved, that the modifications which went into their creation required such strict biological and psychological criteria that only a mere one in many thousands of potential candidates might prove suitable for the simplest of the steps involved in the Legio Custodes creation process. Even of this small pool of candidates, survival through the decades of alchemical augmentation and psycho-memetic training were far from guaranteed. In this fact can be seen a pattern also replicated in the Space Marine Legions, only to a far more highly pronounced degree, so that while the numbers of the Legiones Astartes were prevented from growing beyond perhaps a million at their greatest strength by the limitations inherent in the means of their creation -- a paltry sum compared to the billions of others who took part in the Great Crusade -- the Legio Custodes could never, upon the available evidence, have operated on the scale of the Space Marine Legions, even if the attempt had been made for them to do so. The number of active Legio Custodes warriors has never, it is believed, exceeded 10,000. This figure was first attained towards the middle stages of the Great Crusade and maintained diligently enough that the "Ten Thousand" itself became a cognomen for the Custodian Guard in the works of the Remembrancers and the notaries of the Imperial Court since, whatever its literal accuracy.

Certainly no more than a thousand have ever been seen together at any one time, and then only once at the famous Battle of Gyros-Thravian, fought during the Great Crusade against the Ork Warlord Gharkhul Blackfang and his vast Greenskin horde. The Primarchs Horus, Rogal Dorn and Mortarion and their Legions were vastly outnumbered and close to defeat when the Emperor led an assault from His golden Battle Barge, the Bucephelus. At the head of a thousand Custodians, the Emperor struck at the very heart of the Ork horde, confronting Gharkhul atop a towering Gargant. As the Emperor decapitated the giant, black-skinned Ork, the Custodians laid waste to the warlord's prime warriors. It is said that within moments over a hundred thousand Greenskins died and the WAAAGH! was broken. Legend has it that only three Custodians fell at the battle, their names enshrined forever and engraved on the Emperor's armour thereafter.

Wrought by the Emperor's Hand
It is not an uncommon belief, even among the learned across the wide sweep of the Imperium, to suppose the Custodian Guard are themselves some variant of the Legiones Astartes -- if so crude a term might be applied, an "advanced" form, perhaps even a second, improved iteration. While this explanation might seem to fit the facts, particularly to those without intimate knowledge of the Imperium's birth pains during the final acts of the Unification Wars on Ancient Terra, it could not in fact be further from the truth.

The bloody chronicles of the Unification Wars, particularly in their earliest stages when the Emperor first rose from the nightmarish bloodshed of Ancient Terra's long night to cast down the reign of the warlords and monsters that had long carved the birth world of Mankind into a thousand slaughter-haunted pieces, are difficult now to comprehend. Many are rightly sealed from the Imperium's scholars and even the Terran Court, the dangerous truths within suppressed. But in those dark chronicles the Custodian Guard, in some form or shape, have their part as far back as any can record or those few souls who survive yet from those times can remember. Upon the pillars of the Black Manse of Nas'sau, capital of one of the earliest of the techno-barbarian holds to submit before He who was to be known as the Emperor, inscriptions record the "Lord of Lightning" coming before their warlord-kind flanked by His "four giants of crimson and gold," demanding surrender. Solar decades later, according to detailed extant records preserved in the Trans-Nordyc Akashic archives, a companion guard of thirty "Custodians," bearing Power Spears, clad in Augment-Armour and personally commanded by the Emperor, fought at the head of the newborn Thunder Legion in the assault against the formidable Maulland Sen Confederacy. One of their number is even recorded as being responsible for striking the head of the Confederation's Tyrant-Prophet from its shoulders in the aftermath of the campaign's climactic "Battle of the Red Frost."

Decades later still from this infamous battle, it would be the Custodian Guard in their hundreds, in a form akin to their most modern aspect, who would be charged with leading the cull of those same Thunder Warriors who had once served the Emperor and who had then rebelled in the wake of their forcible disbandment and internment. Only this time the Custodian Guard would be accompanied by the new gene-crafted warriors meant to replace the Thunder Warriors; the first few thousand prototype Space Marines, most of whom would go on to form the nascent I Legiones Astartes, later known as the Dark Angels. The evidence then is clear; since before the first worlds were conquered as the Great Crusade left the Sol System, since before the taking of Luna and the Treaty of Olympus, since before the Cataclysm of Ursh and the fall of the Yndonisic Bloc, before the Space Marines and before the Thunder Warriors, the Custodian Guard have walked at the Emperor's side.

Incarnate Purpose
To accomplish the ends to which the Legio Custodes were designed, not only is a Custodian's superhuman physical power honed to a razor's edge, but so also is the individual Custodian's intellect, mental fortitude and martial skill developed with ruthless application and zeal. The result is the creation not simply of a preternaturally deadly fighter or master assassin -- though they can readily serve as both -- but to create a being whose perception and apprehension of threat and how to counter it is literally beyond the natural limits of man or the powers of a machine. By means unknown and unknowable beyond the Emperor's own forbidden laboratories are the minds of the Legio Custodes programmed and fortified, filled with an encyclopaedic knowledge of all the arts of death, deceit and destruction they might encounter in their duty, and how both to counter and employ them. Beyond even this their education is prodigious, for not simply the Emperor's protectors in intention, they are also made to be His companions and with Him they are armed to converse on such matters of warfare, politics and philosophy as He wished. Most importantly, their psyches are also crafted and shaped as a master gemsmith might cut and polish a perfect stone, fashioned to precise order and pattern, a pattern to which loyalty and discipline, duty and unflinching obedience to the Emperor goes deeper than blood and bone, deeper than conscious thought or unconscious desire. If at any stage in the process the merest flaw is encountered, as with the gemsmith's search of the perfect stone, the flawed subject is discarded.

The product of these amassed arts, arcane, academic and militant, is a body of warriors these living weapons make up -- the Legio Custodes itself, the Ten Thousand. As an organisation, it is in many ways both alike and unalike to the Space Marine Legions in formation and structure, a paramilitary force unique in history, inviolate in action and answerable only to the Emperor. While each Legion was, at least at conception, a highly stratified and self-contained military organisation designed to be the shock troops and principal agency of the Great Crusade, the Legio Custodes was similarly self-sufficient and self-contained, but was never armed or expected to prosecute war, but instead to utterly dominate whichever particular close battle in which they fight. Their base of operations is Terra itself and their own domains interwoven with that of the Emperor. They hold few voidships of their own, but could command by edict any such vessel of the Imperialis Armada or later Imperial Navy to their task, and in fact requisition anyone or anything within the Imperium in extremis to serve their most sacred and undaunted task; the protection of the Emperor and His works from all the foes of humanity.

Whether serving as part of a detachment acting as the destroyers of some ill-fated foe, or tasked as a bodyguard for the Emperor or some element of His household, or even where a handful of Custodians might be deployed to act as the personal protectors to an Imperial emissary or Lord Militant, they are tireless, vigilant and remorseless. They are armed, created and trained to be the match and the death of anything they might encounter face-to-face, be that human, xenos or machine, in any circumstance of single combat, counterattack to ambush or close-range assault. Again and again has history seen the Custodian Guard stand off and defeat odds that seem beyond reason or belief. It has seen them slay monsters foul enough to have been dredged up from pure nightmare, and defeat and slay assassins born of arts both dark and subtle beyond human ken. Tested again and again, be it on alien worlds before now untrodden by humanity, or within the tangled under-hives of the domains of Mankind lost to the Age of Strife, or the twisted palaces of alien warlords, the Legio Custodes proved themselves warriors of terrifying ability. Their service and their mystery has seen the Legio Custodes quickly become a legend equal in wonder and terror even to those alongside whom they served and in the echoes of whispered stories in every corner of the burgeoning Imperium. To the common soldier and Planetary Governor alike, the golden-armoured image of the Custodian Guard is a visible sign not only of the Emperor's direct protection and the embodiment of His will and agency, but also the omen of His unstoppable wrath, as personal and as terrifying in their way as the Angels of Death, his Space Marines, are impersonal and all-conquering avatars in the minds of many of the Great Crusade itself.

Role in History
Even in the days before the Heresy, it was a rare and blessed thing to see a member of the Legio Custodes, and due to the confinement of the Emperor to the Golden Throne, it has become an almost unthinkable event for a present-day citizen of the Imperium. Even during the Battle of Terra, only a handful of Custodes joined the Emperor when He made His assault upon Horus' flagship, the Battle Barge Vengeful Spirit. Since the death of Horus and the mortal wounds he inflicted upon the Emperor, the Legio Custodes, renamed the Adeptus Custodes after the Reformation of the Imperium conducted by the Ultramarines Primarch Roboute Guilliman in the early 31st Millennium, have taken a more limited role by acting solely as the protectors of the physical form of the Emperor on Terra and the primary providers of security for the Imperial Palace. The Adeptus Custodes are the Auric Mortalis ("The Golden Death"), the dread guardians and only living beings permitted to be in the presence of the Emperor unencumbered. Now ensconced deep within the Sanctum Imperialis on Terra, they continue their eternal watch over the recumbent form of the Emperor.

For millennia, the Adeptus Custodes have formed the unyielding core of the Emperor's multi-layered defences. Those Custodian Guard charged with the physical protection of the Master of Mankind spend every waking second devoted to their task, refining their warrior skills and constantly testing and updating their own strategies to ensure the sanctity of the Emperor's throne. They are his last line of defence against a hostile galaxy hell-bent on Humanity's destruction. If they fail in their task, the Imperium will collapse from the inside out. Their duty is so sacred, their reputation so profound, that even Space Marines and Inquisitors kneel before them. Despite their long vigil, the Adeptus Custodes have continued to play an important role during some of the most tumultuous times in Imperial history. The Custodians were instrumental in ending the rule of the High Lord Goge Vandire during the Age of Apostasy in the 36th Millennium. It was the actions of a few members of the Adeptus Custodes, utilising secret passages within the Imperial Palace known only to themselves, that brought the Sisters of Battle, then known as the Brides of the Emperor, to fully realise the acts of base treason perpetrated by Vandire. After their leader, Alicia Dominica, was brought before the Emperor Himself by the Custodes through the secret passages of the Palace, she returned and executed Vandire personally for his apostasy and betrayal of the Master of Mankind.

No one knows for sure how many hidden coups, secret rebellions and misguided attempts at assassination the Adeptus Custodes have foiled. That their martial skills remain so sharp after ten thousand standard years, however, is evidence that they have not stood an idle vigil. They have been called the Emperor's right hand, for they act with His authority and fight in His name. Only now, as the threat of Chaos grows ever greater and takes its dreaded toll, does that gilded hand reach out and become an eagle's claw. The Custodian Guard are the talons of the Emperor unsheathed, and they will tear the corruption of Chaos from the Imperium no matter the cost.

Organisation and Structure
The full details of the organisational structure, disposition and regulation of the Adeptus Custodes are shrouded in secrecy as befits an institution dedicated to ultimate security. Those outside its ranks, even though they operate close to the Senatorum Imperialis and the highest levels of the Divisio Militaris, cannot hope to know more than a degree of detail which is purely observational, and likely barely scratches the surface of the no doubt byzantine Custodes. What can be outwardly observed is contained here within this account, as are the various details and titles with which the Custodian Guard openly interacts with the other organs of the Imperium's power.

The first mystery that outsiders must cope with is that of identity. The Custodian Guard are themselves it would seem effectively ageless and as unchanging as granite, and just as impenetrable to outsiders. They each profess to a given name, often a compound drawn from the lore of Ancient Terra's roll of kings and tyrants, gods and legends. Whether or not this represents some humour or deliberate irony on the Emperor's part given the Custodian's role is something that it is perhaps unwise to speculate on. Such true names they knew as part of their birth and origin are likely obliterated by the process of their creation, but the myths that have grown up around the Adeptus Custodes have long held that each Custodian Guard garners over his centuries a long list of additional names and titles grated purely by the Emperor for their deeds, history and character. Such names are held as a secret of their Order and never betrayed to others, though some myths would have it this roll of honour is graven hidden upon their golden armour or even etched microscopically into their very bones. It was said that Captain-General Constantin Valdor obtained 932 names prior to the assault of Horus upon Terra.

In terms of sturctural organisation, it is apparent that the Adeptus Custodes is unique unto itself in terms of form, offering little in common with the rest of the Imperium's agency of warfare such as the Astra Militarum of the Adeptus Astartes. This is only fitting as the Adeptus Custodes, like other elements of the so-called 'Talons of the Emperor', can be more accurately described as a paramilitary rather than a strategic force, neither geared nor equipped towards the fighting or winning of wars, but to its duties of protection and where needs be, execution.

Command Structure & Tactical Disposition
The overall command of the Adeptus Custodes of course lies within the purview of the Emperor directly, but serving as the head of the Order is a single officer; the Captain-General, and due to the importance of the Adeptus Custodes in the governing of the Imperium since they always stand the closest to the Emperor, the Captain-General often holds a position amongst the ruling High Lords of Terra on the Senatorum Imperialis.

Below the absolute authority of the Captain-General lies the Custodian Tribunate; a senior cadre of perhaps ten in number, forming the Adeptus Custodes' council of war and policy. This body has the incomparable privilege of providing their services as counsel to the Emperor Himself should He so desire it, and in the matters of the security of the Imperial Palace's inner sanctums and the person of the Emperor, no higher authority exists.

In rank below the Tribunes of the Adeptus Custodes can be found the Custodian Prefectorate and the Shield Captains. The distinction between the two, not apparent entirely to outsiders, is one perhaps of seniority and function, with the title of Prefect accorded as a reward of veterancy and favour in service by the Emperor, while the rank of Shield Captain indicates an active field command over a particular detachment or deployment. Below these ranks, the Custodians seem to be peers as in the manner of a warrior caste or aristocracy, rather than links in the more familiar chain of command found elsewhere in the Imperium's armed forces. Their functional titles adapt to their chosen role and panoply of war in whichever command they have been included, with the following broad distinctions applied in communication with external forces on a tactical level, their titles drawn from various ancient sources.

The Hykanatoi
The main strength of the Custodian Guard comprises this role at any given time. They are the bearers of the spear, the bodyguard of the Emperor and the executioners of any who would offer threat or opposition to His will. They are the image of the golden-armoured warrior that is summoned in fear and awe when the Adeptus Custodes is brought to mind. Their numbers include variations of force, wargear and panoply such as the Sentinel Guard and Custodian Guard proper, as well as the elite Hetaeron Guard -- the most skilled fighters among a force of warriors whose martial skills are already beyond human.

The Tharanatoi
Though there are few opponents that the Hykanatoi cannot deal with, they are not a rounded military force in the sense that they are not configured to deal with exigencies such as siegecraft or attrition warfare that fall outside their purview. However, the Adeptus Custodes still maintains the ability to deploy its forces as heavy shock troops should the need arise, or indeed to counter a foe that directs overwhelming force against it in high-intensity warfare. These counter-assault forces are known as the Tharanatoi, and encompass custom-modified suits of Terminator Armour optimised for use by the Custodian's superhuman frame, as well as vastly potent portable firepower such as carried by the Sagittarum Guard, whose weapons include those few dark relics known as Adrathic weapons-disintegration beams of phenomenal destructive potential, long gathered to the Emperor's household and entrusted to no other.

The Kataphraktoi
Long before the Emperor's retreat and seclusion on Terra after the appointment of the Warmaster Horus to command His forces, the principal role of protection and defence the Custodian Guard engaged in was a mobile one. They went wherever their master did, no matter what blasted alien world or lost cityscape of ancient glory He trod. In this the elements of speed and mobility were paramount to their success, as was reconnaissance and counter-strike in lightning response to threat. Those of the Legio who specialised in such tactics and the means of employing them were called the Kataphraktoi; they flew interceptors and gunships of sublime sophistication and power, and piloted a range of repulsor-lift grav-vehicles; tanks, transports and strike skimmers, jet bikes and interface flyers advanced beyond anything else in the Imperium's arsenal.

The Ephoroi
The division of the Custodian Guard about which the least can be said for certain, the Ephoroi were those of the Order that were tasked with covert operations, counter-surveillance and the vitally important task of simulated attack and infiltration. It was they who tested the Legio Custodes' defences and preparations just as foes would, as well as conducted their own hidden missions to dispose of potential threats within the Imperium, and enact final and sometimes utterly secret justice as the Emperor's will demanded it. There are those who have posited that where the Ephoroi ended and the powers that controlled the Officio Assassinorum began at certain junctures was difficult even for the wisest of the Lords of Terra to discern, and it is certain when they wished that the Assassins of the Temples of Terra were the Legio Custodes' to command. It is clear from ancient Imperial records that the Custodians participation in the so-called Blood Games -- a series of war games in which Custodians seek to identify all of the possible ways that the Imperial Palace could be infiltrated or assaulted -- that Custodians were trained in the arts of assassination, both improvised and professional, in order to counter possible attempts on the life of the Emperor. It was not uncommon for several Custodians to be on detached duty for these Blood Games so that the Legio remained vigilant against developing threats to the Emperor's person. Furthermore it is clear that the Custodes were also well-versed in the political etiquette of Terra, and have been known to act outside of Imperial law, to infiltrate influential Imperial noble houses and to investigate any potential threats. This aspect of the Custodian mindset was advantageous, given that the Captain-General of the order often shared a seat upon the Terran Court, which allowed him to navigate the political manoeuvring of the Imperium's various organisations while still remaining an awe-inspiring warrior. It is unknown if this particular branch of the Custodians still functions in the modern era.

The Moritoi
The smallest and most singular division within the Legio Custodes was the Moritoi; the 'honoured dead who walked'. Just as with the Legiones Astartes, it was possible for a Custodian Guard, having suffered injuries so terrible that even they could not recover from them but within whom the vital spark of life remained, to be interred within the cybernetic life support sarcophagus of a Dreadnought. The first of these was made while the Unification Wars were being fought, in a modified Ur-Gholem pattern Dreadnought, the first iteration of its kind intended for use within the Thunder Legions, and as the number of Dreadnought patterns and subtypes within the Imperium's arsenal increased across the Great Crusade's decades of warfare and innovation, so too did the Legio Custodes keep pace with these developments. Though they remained relatively rare, with less than perhaps a hundred Dreadnoughts of the Legio Custodes in service at the time of Magnus' folly and the subsequent attack on Prospero, they represented a phenomenally powerful concentration of force, most having had their chassis upgraded to the Achillus pattern, a variant of the Contemptor manufactured with materials and technologies far beyond even the vaunted war machines of the Legiones Astartes.

Custodes Creation and Training
As has been mentioned, the Custodian Guard and the Space Marines are related in form, as perhaps might be expected of works of a same creator's hand, but they are very different in function and capacity. There are of course similarities between the two. Both are physically transformed well beyond 'natural' human limits in terms of strength, endurance and fortitude, and fitted for inhuman environmental adaption and resilience, though in this the Adeptus Custodes are the markedly superior of the two in might, if not in adaptability. Both are subject to extensive psychological and cognitive conditioning, and are physically and mentally reworked to render most of their baser drives inert and their beings rechannelled towards aggression, goal acquisition and the fulfillment of duty, and as a further safeguard against distraction and as a biological control, both are of course incapable of procreation. In both cases all that is left are beings of singular purpose; in the case of each Adeptus Astartes, what is created is a living engine of conquest that cares for little else, and in the Custodian Guard, each is created protector of unrelenting diligence and savage capability -- a watchman whose vigilance will never tire.

What also differs truly between the two, Custodian Guard and Space Marine, is not just their functional purpose, but the extent of their augmentation and the means by which it is accomplished. While the process through which the Adeptus Astartes are fabricated from a human being is well enough documented in its outline, though its details are, of course, rightly held secret by those parties involved in the process on a Chapter by Chapter basis, genuine facts about the manner in which the Custodian Guard are created are very few, even within the hands of the Imperium's hierarchy. This is because -- as with all else about the Custodian Guard -- it is a matter for the Imperial Household alone, and that authority is one none may gainsay or question. What is known, however, marks them as different. Firstly, there is the matter of the age of the candidacy. For a child to become one of the Adeptus Custodes, it is known that they must begin the process in their late infancy and certainly before adolescence has taken hold on their physical structure. This stands in stark contrast to the Space Marines whose implantation is only possible after adolescence and best served before full maturity. This may link to a second of the few known facts about the creation of the Adeptus Custodes: that the gene-craft and alchemistry that transforms them is as absolute as it is subtle, and worked upon the smallest conceivable microscopic level of their genome and cellular structure. It is a process that effects such change on the mortal human form that, when complete, unless they suffer such massive bodily harm as to forcibly end their lives, they are effectively immortal, without perceptible ageing taking place after full maturity.

Not then for the Adeptus Custodes the pattern of surgical grafting and organ implantation that creates a Space Marine, no such crudities of augmentation at all mar the Custodian; what creates them is as invisible as it is potent, worked upon the core genetics and at a deep cellular level, and perhaps tailored to each specific inductee. There are those who insist that so invisible and yet so powerful this process is that it crosses over into a metaphysical realm of biomancy and psychic manipulation on a level unguessed at. Given that it is said that the Emperor Himself has overseen the creation of every single Custodian Guard who has ever lived, this may well be true. The peerless warriors who then result from this arcane process are a rare breed indeed, and not to be squandered recklessly on the battlefield. They were created with a single purpose in mind; to be the Emperor's own elite guard. They were a force created both to defend the Emperor from physical harm wherever the Great Crusade might take Him, to stand watch over His private domains and most guarded secrets, and to serve as the direct agents of His will -- as His personal emissaries -- be that will to protect, to venture, to claim, to keep secret, or to execute without remorse.

Role and Capabilities
The Custodes are warriors unmatched in the galaxy, genetically-engineered by the Emperor himself. The Emperor engineered few of these warriors once the swifter method for creating superhuman warriors using Space Marine gene-seed became more viable. The martial capabilities of the Adeptus Custodes remain largely unknown at the present time. What is known is that they possess skill beyond even a "normal" member of the Adeptus Astartes. It has been said that the Adeptus Custodes are to the Emperor what the Space Marines are to the Primarchs; that the Emperor's own genetic matrix was used in their creation and through this their loyalty to Him is assured. Others argue that the Custodians are not like the Emperor in the way that a Space Marine is like his Primarch, and that some other source was used as a template for their physical and psychological form; a source that was lost during the anarchy of the Age of Strife. The truth will likely never be known. The Adeptus Custodes are similar to the Grey Knights, the elite Chamber Militant of the Ordo Malleus branch of the Inquisition, in that both are elite, secret organisations with close ties to the Emperor. Custodes are unique as they have neither a known Primarch nor do they use gene-seed to produce their genetic modifications. They stand a full head taller than a Space Marine and it is said that they were almost the same size as a Primarch. In fact it was said that Constantin Valdor, Captain-General of the Legio Custodes and Chief Custodian to the Emperor during the Horus Hersey, was the same size as the Traitor Primarch Alpharius of the Alpha Legion.

Only 300 Custodes serve as the actual personal guard of the Emperor, called the Emperor's Companions, who guard the Emperor's chambers at all times. These are those Custodes that are privileged enough to be in the Emperor's physical presence. Each unit of Companions is led by a Centurion. It was one such Centurion that led a small group of Companions to meet Alicia Dominica, head of the Brides of the Emperor (later Sisters of Battle) during Goge Vandire's Reign of Blood in the Age of Apostasy during the 36th Millennium.

One of the Companions, Constantin Valdor, was the Captain-General and Chief Custodian during the Horus Heresy. He was the most honoured of all of the Emperor of Mankind's creations. No other being had served the Emperor for as long as he, save for the Imperial Regent of Terra, the potent psyker Malcador the Sigillite. Valdor was a proud and respectful warrior unmatched in his devotion and loyalty to the Emperor. Valdor was ever-present at the Emperor's side, always protecting him from unseen enemies and he saved the Emperor's life innumerable times. Along with Malcador, Valdor was the Emperor's most trusted friend and advisor.

Constantin Valdor was one of the first High Lords of Terra chosen after the end of the Horus Heresy to guide the Imperium forward following the Emperor's internment within the Golden Throne. He also had a close relationship with the Primarchs Rogal Dorn and Leman Russ, although initially Russ and Valdor did not see eye to eye. Dorn was ever-present at the Imperial Palace during the Great Crusade and so Valdor and the Primarch spent much time together. On the other hand, Valdor only earned Russ' respect when the former defeated Horus in a sparring match. The two then served together in combat during the Fall of Prospero when the Custodes and the Space Wolves joined to punish the Thousand Sons Legion of Magnus the Red for his continued use of sorcery despite the edicts of the Council of Nikaea. There is no record of when or how Valdor was killed or if he was even killed at all. He eventually stepped down from the Senatorum Imperialis as a High Lord so that he could continue to devote all of his attention to protecting his beloved Emperor, now encased within the Golden Throne.

However, other accounts of the Custodians' exploits provide a different version of the relationship between the Astartes and Custodes. These records indicate that though the Custodians are slightly larger, on average, than Space Marines, their fighting skills are more or less equal. While Space Marines don their armour ritually and in the presence of their squadmates in order to focus themselves entirely on their martial calling, Custodians arm themselves alone and in silence, reflecting on the varied duties they must perform in the service of their master. As bodyguards, the Custodes not only protect the Emperor's person but also maintain scrupulous surveillance on all the other factions of the Imperium to police their loyalty, infiltrate the households of suspicious individuals among the Imperial nobility, and enter deep cover to test the tightness of their own security within the Imperial Palace, exercises which are called Blood Games. Additionally, these records also confirm that each Custodian's name consists of numerous components typically awarded for feats of arms; Valdor's full name, for instance, is over nine hundred components long.

Magisterium and Misericordia
One of the singular features of the ancient Adeptus Custodes as an organisation, and the power of its individual Custodians, is their place in the scheme of the Imperium's law. While an accredited Imperial governor is effectively tyrant of their own world within the edicts and parameters of wider Imperial law, and few would gainsay the Adeptus Astartes in any demands they were to make, the Adeptus Custodes are alone officially afforded the power of the ' Magisterium Lex Ultima ' in the high form, which is to say they are beyond all law and all command save for the direct authority of the Emperor Himself. In addition to this, each one is a lord of the Imperium in their own right. This fact is symbolically represented not only by the right to still carry the single-headed raptor and lightning bolt heraldry of the Unification campaign, but also by the carrying of the ' Misericordia. '

For long centuries of unbridled internecine carnage on Ancient Terra during the Age of Strife, the 'Blade of Mercy' or 'Misericordia' came to represent the complete power oflife and death the warlords held over the mass of humanity which toiled beneath their yolk and suffered at their whim. From the dust wastes of Ursh to the Manakonite Temples of the No'rad ice hive, the bearing of such a blade, usually in the form of a long dagger or short sword made to perpetrate a single, killing thrust, came to symbolise the dread authority of the executioner-judge. Beyond the power it represented, the Misericordia might also be used in practice to carry out a 'clean' sentence of death on a transgressor, or to offer terminal surcease to a warrior grievously wounded in battle at their master's discretion, in either case living up to its name as an agent of mercy as well as death. When the Emperor came to mastery of Terra and ended the bloody cycle of the warlords' reign, His agents and judges, and only they, came to carry the Misericordia as His mastery eclipsed all others, and it is a tradition the Adeptus Custodes still uphold.

Panoply of Arms
Since ancient times, the Adeptus Custodes' panoply of arms and armour, its wargear and even the vehicles and support systems it employed are often unique to the Adeptus Custodes and them alone. Whether ancient relic or newly made, these items were not only customised exactly to task, but were also produced without any regard to the consumption of resources or rarity of component or lore required; to arm and outfit the Legio Custodes to the optimum, nothing was spared. This supremacy is evident from the auramite-alloy reinforced armour the Custodian Guard wears, each a planet's ransom in worth, to the plethora of repulsion-lift grav-vehicles under their control, most of which were derived from designs brought back by the great technoarchaeologist Arkhan Land and forbidden for use by any other. Likewise, their singular weapons, be they blade or bolter, are masterworks, produced by entire sequestered sub-cults of the Adeptus Mechanicus and clades of hereditary artisans beholden to no other and tasked alone in the Adeptus Custodes' provision. Even greater than these resources at their disposal is the Custodian's ability to draw upon any facet of the Imperium's war machine and uncounted hosts it needed to meet its ends, extending its potential power to unguessed at levels.

The reason for this supremacy above all in arms is a simple one, for not only are the Adeptus Custodes fitted to match any potential threat from without, but also from within, and a clear demarcation was enforced between the potency of the Custodes' arms, and those of any other Imperial forces, not least of all the Space Marines, who they already overmatched in physical might. It is perhaps one of the great questions of lost history: what might have been in the wars of the Horus Heresy had the Legio Custodes not been so heavily waylaid by the disastrous consequences of Magnus' great sin on Terra and more able to take an active hand, had not so many of them been trapped for years in a terrible parallel war all but entirely hidden from the eyes of the cosmos? But that is a darker tale yet, and the weighty duty of a different record than this to tell.

At Present
Before the Emperor's internment within the Golden Throne, the Custodes had access to the some of the most advanced wargear within the armouries of the Imperium. However, since the Horus Heresy they have taken a far more limited role in Imperial affairs, and almost never leave Terra and only very rarely leave the Imperial Palace. It is unknown how limited the Custodes' wargear choices are due to the unknown workings of this elite and reclusive paramilitary specialist force that remains an organsiation apart. They would also more than likely remain aloof in regards to the composition of their wargear and equipment as well as their overall tactical capabilities. The traditional colour worn with the golden armour of Adeptus Custodes was crimson, but following the internment of the Emperor into the Golden Throne after the defeat of Horus upon his flagship during the Battle of Terra, this colour was changed to black. This bleak colour change reflects that the Custodians are now in permanent mourning for failing to protect the Emperor in His hour of need.

Rogue Trader
In Rogue Trader (1st Edition) the Custodes were the Guardians of the Emperor and the Imperial Palace. They wore simple but effective clothing: boots, leather breeches and a black cloak, their torsos were naked and corded with tattooed muscle, and they carried laser-tipped halberds said to have been built to resemble the traditional Guardian Spears. Their helms were tall and ornate works of art, giving the Custodes a threateningly impassive appearance. They were considered superior to the Astartes of the time, although not as loyal to the Emperor. Clearly, this version of the Custodes has long since been superseded.

Notable Custodes

 * Constantin Valdor - Constantin Valdor was the Chief Custodian and Captain-General of the Legio Custodes during the Great Crusade and the Horus Heresy. Just prior to the outbreak of the Horus Heresy, Valdor was charged by the Emperor to accompany the Primarch Leman Russ of the Space Wolves in bringing the Primarch Magnus the Red of the Thousand Sons to account for breaking promises he had made during the Council of Nikaea which had strictly forbidden the use of sorcery and psychic powers within the Imperium. Valdor, with a contingent of the elite Custodian Guard, fought alongside Russ and the Space Wolves during the Fall of Prospero. He and his forces were responsible for killing at least three of the greatest psykers of the Thousand Sons Legion and routing a force much more numerous than their own. He was also responsible for saving Bjorn the Fell-Handed when his arm was corrupted by the sorcerous powers of a Thousand Sons psyker. Valdor sliced Bjorn's arm off to prevent the corruption from overrunning his body. After Horus' betrayal became known to the Imperium, Valdor was present during the meetings of the Officio Assassinorum's Clade Sires and Siresses. It was Valdor who suggested that an Assassin from each Clade operate as a team to assassinate Horus, rather than act alone as was the standard mode of operation. It is currently known that after the Horus Heresy Valdor would become a High Lord of Terra, but would eventually step down voluntarily to protect his beloved Emperor.
 * Aquillion - Aquillion served as the Occuli Imperator, the "Eyes of the Emperor," the Custodian who was assigned to watch over the Primarch Lorgar and his Word Bearers Legion after they were found to have violated the Emperor's trust during the Great Crusade by spreading their belief that the Emperor was a God to newly conquered human worlds. Aquillion and a team of four other Custodians (Vendatha, Sythran, Nirllus and Kalhin) were assigned to the Word Bearers Legion after that Legion's humiliation on the world of Khur and the destruction of that planet's capital city of Monarchia by the Ultramarines Legion on the order of the Emperor. Aquillion used a two-handed Power Sword in combat rather than the standard Guardian Spear. Aquillion and his four-man-team were all eventually slain by the Word Bearers so that they could not inform the Emperor of Lorgar's betrayal. The leader of the daemon-possessed Gal Vorbak, Argel Tal, decapitated Aquillion by biting his head off.
 * Arcatus Vindix Centurio - When on Terra the Emperor Himself imprinted the genetic knowledge of the Primarch-program onto Corvus Corax, he also ordered a squad of his very own bodyguards to accompany the Primarch of the XIXth Legion back to Deliverance to protect the sensitive knowledge. Although the knowledge imprinted into Corax's mind would slowly fade, the Custodes would continue their Emperor-given task to protect and watch over the Primarch of the Raven Guard. As leader of this new bodyguard and the man whose task it had been to watch over the Raven Guard during their stay in the Imperial Palace, Arcatus Vindix soon became a figure of influence within Corax’s war council, as the Ravenlord enjoyed debating with the leader of the Custodians when not on the front lines or even in the heat of battle. Whereas Corax always marvelled on Horus’ temerity to declare war on the Imperium, Arcatus had a quite different point of view -- Horus would never have turned traitor if he hadn't been sure from the beginning that he would win. Alongside the ever-active Raven Guard, Arcatus and his brothers saw much combat, participating in such venture as the Raid on Kapel-5642A or the Day of Vengeance on Carandiru.
 * Brokur - Brokur took part in a "Blood Game" alongside Amon, Haedo and Zerin. Brokur emerged as the runner-up in the contest as he made it to The Hegemon before he was caught. Valdor had not expected anyone to get closer to the Imperial Palace than Brokur, but Amon succeeded in infiltrating the Palace itself.
 * Saturnalia Princeps Carthagina - Saturnalia was a member of the Legio Custodes during the Horus Heresy era. He was assigned to the Psi-Hunter Team charged with the task of capturing the Outcast Dead -- the surviving members of a small Astartes honour guard known as the Crusader Host that was stationed on Terra. The fugitive Astartes were members of the Traitor Legions that had sided with Horus in his rebellion against the Emperor during the Horus Heresy. They had been imprisoned in the maximum security prison known as The Vault since they could no longer be trusted, but they managed to stage a break-out and escape. Saturnalia became part of the hunt team led by the Seer Hunter Yasu Nagasena to track down the Outcast Dead in an attempt to regain his honour after letting the Outcast Dead take his prisoner, the Astropath Kai Zulane. During the final battle with the Outcast Dead in the Temple of Woe, Saturnalia managed to kill Subha, a World Eaters Berserker. Subbha's twin, Asubha, attacked him and drove a Custodian Guardian Spear through Saturnalia's head, just as Saturnalia managed to stab Asubha in the heart with his own Guardian Spear.
 * Mikaelor Cobernus - Cobernus was a Shield Captain of the Legio Custodians during the 31st Millennium.
 * Haedo Emankon - Haedo Emankon took part in one of the many "Blood Games" alongside Amon, Zerin and Brokur. Of the four participants in the contest, Haedo was the third most successful, as he made it to Cebu City before he was caught. Haedo Emankon was later charged by Constantin Valdor to gather incriminating evidence on a member of the government of unified Terra who was suspected of treason against the Emperor alongside Amon Tauromachian.
 * Iacus - Iacus was one of the 15 Custodes sent to watch over the Word Bearers Legion who was not assigned to watch over Lorgar with Aquillion. Iacus and his fellow Custodes watched over First Captain Kor Phaeron and First Chaplain Erebus instead. Before the Word Bearers' treachery came to light, Iacus and all his Custodes had fallen in battle alongside the Word Bearers, never knowing of their betrayal.
 * Kalhin - Kalhin was one of the four other Custodians assigned to serve under the command of Aquillion to watch over Lorgar and the Word Bearers. While attempting to kill the traitor Cyrene Valantion, Kalhin was shot down by Incaradine, the mechanical Conqueror Primus of the 9th Maniple of the Carthage Cohort of the Legio Cybernetica.
 * Amon Tauromachian Leng - Amon Tauromachian was a Custodian who was charged with protecting the Emperor in the early 31st Millennium when Terra began the process of fortification to withstand the coming assault by the Warmaster Horus and his Traitor Legions. Many years before the start of the Heresy, Amon was present at the Council of Nikaea to watch over the trial of Magnus the Red for his use of sorcery. Whilst protecting Kasper Hawser, a skjald of the Space Wolves, Amon was attacked by a minion of Chaos in the disguise of a Thousand Sons Space Marine, but managed to survive the encounter thanks to the efforts of the Astartes of the Space Wolves. After Horus's betrayal reached Terra, Amon was tasked with taking part in the "Blood Games," a rite all Custodians endured and one which set them against the formidable defences of the Imperial Palace in the hope of improving the Custodians' defence of the Emperor through the exposure of flaws in his protection. Following his success in the "Blood Games", Amon Tauromachian and a fellow Custodian Haedo Emankon were sent on a dangerous mission by Constantin Valdor, the Chief Custodian, to gather incriminating evidence on a member of the government of unified Terra who was suspected of treason against the Emperor.
 * Nirallus - Nirallus was one of the four other Custodians assigned to serve under the command of Aquillion to watch over Lorgar and the Word Bearers. Amongst his fellow Custodes and the warriors of the Word Bearers, Nirallus was considered the "swordmaster" for his skill with his Custodian Spear. He used this skill to slay Malnor, one of the strongest of the daemon-possessed Gal Vorbak, but was torn apart seconds later by two other members of this warrior elite of the Word Bearers Legion.
 * Sagittarus - Sagittarus was a Contemptor Dreadnought of the Custodians during the Horus Heresy era.
 * Sythran - Sythran was one of the four other Custodians assigned to serve under the command of Aquillion to watch over Lorgar and the Word Bearers. Before leaving Terra to watch over the Word Bearers Legion for 50 standard years as part of the XVII Legion's punishment for violating the Imperial Truth during the Great Crusade, Sythran swore an oath that he would not speak again until he set foot on Terra once more when this duty was complete. He kept this promise until the moment of his death at the hands of the Gal Vorbak, when he mocked the Word Bearers' Chaplain Xaphen just after killing him for his betrayal of the Emperor.
 * Sumant Giri Phalguni Tirtha - Tirtha was a Veteran Custodian, whose name was said to bear at least seventy-six awarded titles. He was one of the gaolers at the high security Imperial prison on Terra known as The Vault. It was not known how Tirtha had come to Khangba Marwu. He bore no obvious injury and was in prime physical condition, but rumour said he had once questioned an order from the Captain-General, Constantin Valdor. Tirtha was charged with the duty of guarding an extremely dangerous group of prisoners known as the Outcast Dead, the remnants of the Astartes honour guard known as the Crusader Host that was stationed on Terra whose parent Legions had turned Traitor and sided with Horus. Tirtha was killed during the Outcast Dead's successful escape attempt from The Vault, when Atharva of the Thousand Sons took control of an elite soldier with a Plasma Gun and made him shoot Tirtha in the stomach.
 * Uttam Luna Hesh Udar - During the Horus Heresy era Udar was the lead gaoler of the subterranean high security prison built to detain those individuals deemed hostile to the Emperor and isolated from the world above. Built beneath the Himalayan peak known as Rakaposhi, only the most senior Custodians bothered to use its original name, Khangba Marwu, and for those condemned to its cells, who would never again see the light of day, it had an altogether more prosaic name. They knew it simply as The Vault. Udar was removed from the fighting ranks of the Legio Custodes after being exposed to an Ork bacteriological pathogen, whose aftereffects greatly reduced his reflexive response times to a level below the minimum required for front line service amongst the Custodians. A proud man, he took his removal from the front lines hard, but eventually adapted and took to his new role as a gaoler at The Vault with the same determination and attention to detail that had seen him come the closest to the full infiltration of the Imperial Palace in the Blood Games until his peer Amon Tauromachian Leng bested him. During his tenure, Udar was charged with watching the last remnants of The Outcast Dead -- a small group of Astartes warriors drawn from the Traitor Legions that were the last of the Crusader Host, an honour guard of Space Marines comprised of representatives from each of the 18 Space Marine Legions that served on a rotational basis within the Imperial City outside the Imperial Palace on Terra. Udar met his ultimate fate when The Outcast Dead engineered a successful escape attempt. Udar was slain when he confronted one of the berserker World Eaters Astartes in close combat. The berserker in question, Sergeant Tagore, ripped out a section of Udar's spine through his chest, just as Tagore had promised he would during his confinement.
 * Vendatha - Vendatha was one of the four other Custodians assigned to serve under the command of Aquillion to watch over Lorgar and the Word Bearers. Vendatha was used as the 10th sacrifice to summon Ingethel, the daemonic Emissary of the Chaos Gods.
 * Zerin - Zerin was a participant in a "Blood Game" alongside Amon, Haedo and Brokur. Out of the four, Zerin did the worst, as he did not even make it into Imperial Territory before he was caught by his fellow Custodians in the city of Irkutsk.

Standard Wargear

 * Custodian Armour - The panoply of the Adeptus Custodes represents the pinnacle of the armourer's art. Far more sophisticated than production-model Space Marine power armour, it is fashioned with rare auramite alloy such as that used for the armour the Emperor Himself wears in battle. Each suit is unique to the Custodian Guard who wears it, and it is fitted with arrays of proximity sensors and refractor field generators to further enhance its defences.
 * Praesidium Shield - Ornate precursors to the later Storm Shields, the Praesidium shields of the Adeptus Custodes are forged from all but indestructible layered ceramite and resilient alloys reinforced with inbuilt field generators.
 * Aquillon Pattern Terminator Armour - This is a variant of Terminator armour uniquely designed to operate in conjunction with the physiology of the Adeptus Custodes. Its origins lie with the Cataphractii suits of the Space Marine Legions, but with far greater power capacity and customised neuro-fibre uplinks, it is said, redesigned by the mind of the Emperor Himself for His elite forces.
 * Teleporation Transponders - Although more often employed in the role of bodyguards and sentinels, when the Emperor was active during the Great Crusade, the Legio Custodes often made use of the teleportarium of their Imperial warships to swiftly gain planetfall. Such mechanisms employed for this were the most advanced of their kind and little was left to chance in their operation.
 * Refractor Fields & Iron Halos - Although relatively rare owing to the resources and arcane lore required to construct them, a variety of personal defence energy shields are nevertheless common in the armoury of the Emperor's direct servants, serving both as a badge of office and a means of protection.
 * Magisterium Vexilla - The ancient icons and standards borne by the Legio Custodes represented the inviolable and nigh-omnipotent authority of the Emperor; a seal of ultimate sanction and the might of Mankind, and known as the Magisterium. Their mere presence on the battlefield is enough to fill those loyal with resolute zeal and wrack those who face His wrath with fear and dread. Moreover, these banners and icons were also technological artefacts containing vox relay systems and subsonic inducers, augmenting their battlefield role far beyond the merely symbolic.
 * Arae-Shrikes - Ancient devices of the Dark Age of Technology which twist and distort electromagnetic signals, these counter-intelligence devices are considered blasphemous in principle and arcane function by the ancient Mechanicum, and persist only in the hands of the Emperor's retinue. By the use of malifica-djinn and hostile blight-code, they pervert the data-readouts of unshielded cogitators and telemetry plotters with lying reports and malign falsehood, and what they cannot deceive, they simply blind and deafen with a shrieking multi-frequency cacophony.

Assault Weapons

 * Guardian Spear - The signature weapon of the Adeptus Custodes and in many ways their symbol of office is the Guardian Spear. Elegant and deadly, it is a potent and unique design incorporating a power blade and a highly advanced integrated bolter weapon, and in the hands of a Custodian Guard it can strike and parry at blinding speed despite its size. More rarely, these weapons mount not bolters but advanced specialised sub-weapons such as compact meltas or even Adrathic disintegration beamers, issued against the deadliest of expected foes. The most beautifully wrought and deadly weapons of the Custodians' arsenal are the Paragon Spears, storied weapons wielded by the most noted Shield Captains and Tribunes among the Ten Thousand.
 * Sentinel Warblade - This is another unique weapon of the Adeptus Custodes, brutal where the Guardian Spear is precise. The hyper-pulse disruption field generators found in the warblade are able to tear apart flesh and metal on contact, while inbuilt into the blade is a double-barrelled bolt caster able to lay down a hail of fire at short range.
 * Solerite Power Gauntlets & Power Talons - First fashioned in the pattern of ancient relics to arm the elite of the Thunder Warriors, the Solerite Power Gauntlets and their raptor-taloned variants are potent weapons. They differ from the standard Power Fists and claws utilised by the Adeptus Astartes in both the near-irreplaceable artefact power coils which energise their disruption field generators and the nigh-indestructible materials their casings and blades are fashioned from, forged as they are in furnaces recovered from the ancient Tempest galleries near Terra's molten core.

Ranged Weapons

 * Adrathic Weapons - Relics of the Dark Age of Technology believed to be all but unique to Terra, Adrathic weaponry uses a potent but dangerously unstable energy beam to sever the internal bonds of matter, causing objects caught in their path to unravel in a spectacularly destructive manner, leaving only a flaring after-image of what was. Such weapons were legend during the Age of Strife, and devastating wars were fought on anarchic Old Terra solely over the possession of some unearthed cache of Adrathic guns and the promise of the power they held. When the Emperor came to dominion and ended Old Night on Ancient Terra, all Adrathic weapons were given over to Him on pain of death, not simply to the one who retained them but to their entire land and nation such was the importance He placed on controlling this technology. These weapons have remained in His care ever since, and only His own personal weaponsmiths gained and kept the knowledge of how to replicate them in small numbers, much to the jealousy of Mars.
 * Adrastus Bolt Caliver - Developed as a hybrid of later pattern Imperium bolt weapon designs and Dark Age of Technology 'Adrastite' disintegration beam weapons prohibited from general Great Crusade issue, the Adrastus bolt caliver is a potent shoulder arm serving as a portable heavy weapon for the Adeptus Custodes. This combination weapon is able to unleash a fusillade of explosive rounds at long range with the potency of the Heavy Bolters carried by the Adeptus Astartes, or at shorter ranges fire a disintegration beam able to rip a target apart at a molecular level, causing its victims to cease to exist in a howling flare of energy.
 * Lasrum Bolter and Bolt Cannon - This pattern of bolt weapons is named for the weaponsmiths of the Lastrum Core Clan of the Appolyne workshops of Terra. Other than being exemplars of their kind in terms of skill of fabrication, they would not be remarkable save for their uniquely powerful ammunition. Rather than the usual 'kraken' type bolts utilised by the wider sweep of the Adeptus Custodes, the artisans of the Lastrum clans hand manufacture only customised mass-reactive heliothermic warheads for their bolt shells. Once within their target, these burst into brief, but sun-hot incendiary detonations, incinerating their victims from within. These shells are uncommonly dense, requiring a far stronger charge to launch than common bolt shells, and only the Lastrum's uniquely sturdy construction for a weapon of their size can withstand the stresses of their repeated firing. The sheer resources and artifice of these weapons were immense, and they could never hope to be mass produced to arm the Space Marine Legions, and even the output of entire generations of the Lastrum themselves could barely satisfy Legio Custodes ' demands.

Adeptus Custodes Battlefield Support Weapons
As with much of their personal armoury, the weaponry of the Adeptus Custodes' unique war machines is an expression of the height of the Imperium's technological capacities. Many can be described as paragon variants of well-established Imperial patterns such as the Arachnus Blaze Cannon, which were recognisably developments of widely used Imperial las technology, but built with esoteric and powerful components which could never be replicated en masse. Others, such as the Iliastus Accelerator Cannon, were however at the cutting edge of new military developments, incorporating technologies gleaned and tested on the frontline of the Great Crusade.

Gallery
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