Adeptus Custodes army rules, detachment abilities, stratagems and lore for Warhammer 40k, with links to the full unit datasheet table.
The Adeptus Custodes, known as the Legio Custodes during the era of the Great Crusade and Horus Heresy, and colloquially as the "Ten Thousand," is the Imperial adepta responsible for protecting the Imperial Palace and the physical body of the Emperor of Mankind, as well as serving as His most important emissaries, His companions, and the keepers of His many secrets. The Custodes is an elite cadre of genetically-engineered transhuman male and female 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 each was created by the Master of Mankind personally. His might permeates them, burns in their eyes and flows through their veins as surely as their blood. As such, the Adeptus Custodes are widely regarded as the deadliest warriors in the galaxy, Human or otherwise.
Where Space Marines represent the mass-produced, genetically-engineered soldiers of the Imperium of Man, the Adeptus Custodes are a force of individual warriors, each a bastion in their own right and a sentinel of unmatched capability and singular purpose created to counter any possible threat -- Human, alien or Daemonic. These warriors have stood in the presence of the immortal Emperor of Mankind since before the time of the Unification Wars. For ten thousand Terran years and more, the Custodians have stood watch over their lord and master, serving as the Emperor's personal heralds 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 are seen outside 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.
With the birth of the Great Rift in the Era Indomitus, and the resurrection of Primarch Roboute Guilliman as the Lord Commander of the Imperium and Imperial Regent, the Adeptus Custodes have been forced to take a more active role in galactic affairs. A force of Custodians has followed Guilliman's Indomitus Crusade out into the galaxy, often serving as the heralds of a Torchbearers fleet bringing the Primaris creation technology to existing Space Marine Chapters.
This was done both to reassure the existing Chapters of the Adeptus Astartes that the gift of the Primaris Space Marines was ordained by the will of the Emperor, but also because in this new era of constant threat, the Custodes have come to a hard realisation: sometimes, the best defence is found on offence.
The Adeptus Custodes: It is a name spoken in reverent whispers, for these warriors have stood in the presence of the immortal Emperor of Mankind, and are charged with His protection. His greatness runs in their veins, undiluted by the passage of aeons. 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.
Near-immortal are the Adeptus Custodes, for the golden elixir of the Emperor's own blood runs in their veins. Though outwardly resplendent, there is a scar upon the soul of the Custodian Guard, an inescapable disgrace that has tainted their history and lives in the heart of every warrior, from fresh inductees to veterans over a thousand Terran years old.
Clad in baroque, golden Custodian Armour and armed with priceless relic weaponry, the Adeptus Custodes make for a magnificent sight. They tower over mortals; each has the statuesque physique of an ancient hero, close to nine Terran feet in height even without their scarlet-crested helm. Yet for all their might, for all their bravery, the Custodians were unable to prevent the Emperor from falling to His traitorous son, the Primarch Horus.
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 of Man will collapse from the inside out. Their duty is so sacred, their reputation so profound, that even Space Marines and Inquisitors kneel before them.
Though few truly realise it, Humanity teeters upon the precipice. Aliens and fiends hurl themselves against the Imperium's borders even as the rot of treachery and the mutating curse of Chaos gnaw at it from within. Under such impossible duress, Mankind cannot endure.
Once, the most part of the Adeptus Custodes would have stood stoically by as the Emperor's foes advanced upon Terra, each lordly champion stern and immobile until the foe crossed the pitch-black moat of the Sol System and hammered upon the palace walls themselves. After all, to keep vigil is the oath they swore to fulfil, and they have never abandoned it, even as thousands of worlds have burned.
Now that sovereign duty has changed. In Mankind's darkest hour, a legend has emerged from the annals of history -- the Ultramarines Primarch Roboute Guilliman, an icon of authority. The coming of this legendary High Lord has galvanised the Adeptus Custodes, and after long consultation, seen them reorganised and given new life. The golden brotherhood now numbers not only guardians, but also crusaders.
Alongside the female order of anti-psykers known as the Sisters of Silence, the Adeptus Custodes bring war anew to the enemies of the Imperium. All shall learn to fear their golden warships, for they herald swift and unmerciful slaughter. These are heroes of fire and blade, and they will not stop until every threat to their immortal master lies slain.
From outside, the organisation of the Ten Thousand seems byzantine. When they deign to account themselves at all to other Imperial bodies their ranks appear complex and highly stratified. Yet much of this is tradition, or else purposeful misdirection; in practice, the Adeptus Custodes use a robust and easily adaptable system to organise their forces.
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 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 granted 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 that this roll of honour is graven in hidden fashion 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 structural 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 agencies of warfare such as the Astra Militarum or 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 execution. The Adeptus Custodes operate as a military force, a gathering of champions each of whom possesses unassailable authority over virtually any other organisation in the Imperium. Conversely, no Imperial agent can give a Custodian orders. Even such worthies as the High Lords of Terra and Lord Commander Guilliman are able only to request -- not demand -- their aid.
Lore excerpt from Warhammer 40k Wiki on Fandom, available under CC BY-SA 3.0.
18 Adeptus Custodes datasheets on the current roster, each with its points, model statistics, keywords and abilities.
13 Adeptus Custodes datasheets that are no longer part of the current army roster. They are kept for reference and for players whose collections still contain the models.