“To guard Humanity from itself.”
Some threats descend from the stars in chitin and steel. Some threats claw their way out of the Warp in fire and madness. But the most insidious enemies of the Imperium are those who walk in daylight, speak in familiar voices, and pray beneath the same icons as the faithful.
These are the foes of the Ordo Hereticus.
Formed in the long shadow of the Age of Apostasy, the Hereticus was created to ensure that the Imperium would never again be brought low by its own corruption. Where the Ordo Xenos watches the alien, and the Ordo Malleus hunts the daemon, the Hereticus turns its gaze inward — toward treason, mutation, apostasy, and the quiet rot of forbidden thought.
Its Inquisitors are feared above all others. Not because they are cruel — though many are. Not because they are powerful — though all are. But because their remit is absolute. No priest, no noble, no Space Marine, no Inquisitor is beyond their suspicion. Only the Emperor Himself stands outside their jurisdiction.
The Hereticus fights a war without front lines, without banners, without end. A war waged in the alleys of hive cities, in the vaults of the Ecclesiarchy, in the minds of psykers, and in the hearts of men. A war where a whispered doubt can be as deadly as a daemon’s claw.
To the Hereticus, heresy is not merely an act. It is a pattern. A deviation. A shadow cast where none should fall.
And so they watch. And so they judge. And when necessary, they burn.
Today, the Conclave turns its attention to a subject long considered loyal, yet never fully understood — a Chapter whose origins predate the Creed, whose rites defy categorisation, and whose silence is as unsettling as their savagery.
The Carcharodons Astra.
What follows is the recovered dossier of an Inquisitorial observer — a passenger in the abyss — whose final notes offer the most complete insight yet into these grey‑clad predators of the void.
Case File: Carcharodons Astra
(previously known as Space Sharks)
Ordo Hereticus Classification: Extremis‑Indeterminate. Loyalty affirmed. Orthodoxy unclassifiable.
Account Attached at End.
I. Preface to the Conclave
There are Chapters whose histories are illuminated by the Ecclesiarchy’s candles, their deeds sung in cathedral vaults. The Carcharodons Astra are not among them.
Grey‑armoured predators from the outer dark, they emerge only in times of dire need, strike with brutal efficiency, and vanish again into the abyss. Their origins are unrecorded, their doctrines pre‑Imperial, their rites alien to the Creed. They speak in archaic High Gothic and bear the cold of the void like a second skin.
For centuries, the Ordo Hereticus has maintained a sealed dossier on them. This is the first time its contents have been made available to the wider Conclave.
II. Mandate of Observation
Following their reappearance during the Badab conflict, the Conclave authorised a doctrinal assessment. Not censure — merely observation. A single Inquisitor was embedded aboard the Nicor, tasked with determining whether these Astartes still walked within the Emperor’s light.
His final transmission was incomplete. His notes survived.
III. The Edicts of Exile
The Carcharodons claim to have served the Emperor — the “Void Father” — since the earliest days of the Great Crusade. Their first recorded mention lies in the Mythos Angelica Mortis, describing a Chapter dispatched into the “outer darkness” to hunt traitors, aliens, and renegades without mercy.
This predates the Imperial Creed. This predates the Ministorum. This predates the Hereticus itself.
To the Conclave, this is the first and greatest concern: a loyal Chapter whose faith predates orthodoxy.
IV. Tapu, Totem, and Silence
The Inquisitor’s notes describe rites unlike any sanctioned by the Ecclesiarchy:
bone totems carved with personal lineage
tapu markings denoting taboo, honour, or shame
ritual silence in battle
a refusal to speak the Emperor’s name aloud
archaic armour patterns preserved as relics of identity
None of this is heretical. None of this is Imperial.
The Hereticus recognises the danger of such cultural divergence. Not corruption — but deviation.
V. The Red Tithe
Their recruitment practices are brutal, archaic, and entirely outside Ministorum oversight. Worlds are “harvested” for worthy stock, their populations culled to select only the strongest.
The Inquisitor witnessed one such tithe. His notes describe it as:
“A culling masquerading as selection. A ritual masquerading as war. A sacrament older than the Creed.”
The Hereticus cannot forbid it. The High Lords themselves granted the Carcharodons this right.
But the unease remains.
VI. The Ashen Pact
The most troubling discovery was evidence of cooperation with the Ashen Claws — a renegade offshoot of the Raven Guard. Not traitors, but exiles. Outcasts. The Carcharodons call them kin.
This is not heresy. But it is a pattern. A pattern the Hereticus cannot ignore.
VII. The Passenger Realises He Is Not Alone
The Inquisitor’s final entries grow fragmented. He writes of being watched by Librarians whose eyes reflect the void. Of warriors who move without sound. Of a Chapter that does not fear the Inquisition — because it does not understand it.
His last coherent line:
“They are loyal. But not to us.”
VIII. Conclave Determination
The Ordo Hereticus issues the following judgement:
Loyalty: Affirmed
Doctrinal Purity: Indeterminate
Cultural Deviation: Severe
Threat Level: Contextual
Recommendation: Continued observation. No censure. No contact unless necessary.
The Carcharodons are not heretics. They are not traitors. They are something older — a remnant of a time before the Creed, before the Ministorum, before the Hereticus itself.
They are a reminder that the Imperium’s edges are older and stranger than its heart.
IX. Ritual Sign‑Off.
Filed under seal by the authority of the Ordo Hereticus. May the Emperor’s light reach even the darkest waters.
Testimony of the Unfortunate Observer.
Recovered from the personal log of Inquisitor‑Savant L. Varenius, Ordo Hereticus. Final entries incomplete. Chrono‑stamp corrupted.
Entry I — Embarkation
I have boarded the Nicor. The air tastes of frost and old metal. The Astartes who greeted me did not speak. They inclined their heads once — a gesture that felt more like an acknowledgement than a welcome — and turned without waiting for my reply.
Their silence is not rudeness. It is something older. Something ritual.
I remind myself that I am here to observe doctrine, not judge character. Still, I feel as though I have stepped into a cathedral whose god is not mine.
Before boarding, a mortal serf assigned to the docking bay murmured something I have not recorded in the official log. A name — or perhaps a title — spoken with the kind of fear that comes from inherited memory rather than personal experience.
He called it “the Forgotten One.”
When I pressed him, he paled, shook his head, and insisted he had heard it only in passing from older serfs who “served before the long silence.” He refused to elaborate. By the time I sought him again for clarification, he had vanished from the muster rolls. No transfer. No reassignment. No record.
The Carcharodons themselves have made no mention of such a figure. I suspect they never would.
Entry II — The Void Father
The Chaplain permitted me to witness a rite. No words were spoken. No prayers recited. Only a low, rhythmic thrum — the sound of armoured fists striking breastplates in unison.
When it ended, the Chaplain placed a bone totem in my hand. Carved. Weathered. Warm.
He said only: “He remembers.”
I do not know who He is. I fear I do.
Entry III — Tapu
The warriors bear markings I cannot decipher. Lines. Spirals. Jagged sigils carved into ceramite and flesh alike. When I asked their meaning, the Apothecary replied:
“Some things are not spoken.”
I have served the Hereticus for decades. I have interrogated witches, cultists, apostates. I have never felt so profoundly… unwelcome.
Not hated. Not threatened. Simply… unnecessary.
As though my presence is tolerated only because their ancient orders demand it.
Earlier today, while passing one of the armoury decks, I overheard a brief exchange between a Captain and a subordinate. Their voices were low, but the tone was unmistakably corrective. The Captain said:
“You do not argue a plan when you have earned no exile markings.”
The subordinate’s armour was unadorned — no tapu, no scars of honour, no carved sigils. Blank ceramite. Untested. Unproven.
The Captain’s rebuke was not cruel. It was simply… absolute. A reminder that authority among these warriors is not granted by rank alone, but by the weight of one’s past deeds — deeds recorded not in words, but in the very armour they wear.
When I looked again for the subordinate later, he was gone. Whether reassigned, punished, or simply absorbed back into the silent machinery of the fleet, I cannot say.
Entry IV — The Red Tithe
I witnessed their recruitment. A world culled with the cold precision of a surgeon removing diseased flesh. The strong were taken. The weak were left behind.
The Captain told me: “Strength is truth. Truth is survival.”
I asked about the Imperial Creed. He did not answer.
There were some among the population who raised objections — a governor’s aide, a local preacher, a handful of militia officers who believed their authority still held meaning. They stepped forward, voices trembling with outrage or faith or desperation.
The Carcharodons did not argue. They did not threaten. They did not even acknowledge the words.
They simply executed the objectors where they stood.
No ceremony. No warning. No anger.
Just a single, silent motion — a blade, a bolt, a broken neck — and then the tithe continued as though nothing had occurred. The bodies were left where they fell, cooling in the dust, a mute reminder that resistance was not merely futile but irrelevant.
I realised then that the Red Tithe is not a negotiation. It is a verdict.
Entry V — The Ashen Claws
I found evidence of their dealings with the Ashen Claws. Renegades. Exiles. The Carcharodons speak of them as brothers.
When I confronted the Librarian, he regarded me with eyes like deep water and said:
“Blood remembers what the Imperium forgets.”
I felt cold. Not from fear — but from the realisation that I was hearing a truth older than the Hereticus itself.
Entry VI — Observation Reversed
I am being watched. Not openly. Not with hostility. But with the quiet, patient scrutiny of a predator assessing an unfamiliar creature.
I hear footsteps behind me when I walk the lower decks. I glimpse movement in the reflection of the armoury glass. The Librarians pass me in corridors without sound.
I am beginning to understand: I am not here to observe them. I am here so they may decide whether I am worthy of understanding them.
Entry VII — Final Fragment
The last line recovered from his log, corrupted but legible:
“They are loyal. But not to us.”
Entry VII — Addendum unknown placement (Fragmented)
There is one observation I did not intend to record. It came to me only as an afterthought, a detail dismissed at first as unimportant — yet it lingers.
For days at a time, entire squads of the Chapter vanish into a vast chamber deep within the Nicor. I was denied entry. The serf who guided me to the threshold warned that the temperature within is lethally low for unaugmented flesh. Frost clung to the bulkhead like hoarfrost on a tomb.
Through the narrowing gap of the sealing doors, I glimpsed shapes in the dark — towering silhouettes, unmoving, half‑entombed in ice. Dreadnoughts. Scores of them. Unactivated. Silent. Arranged not as war machines, but as icons of meditation and spiritual reverence.
The warriors who entered did so without words. The warriors who emerged were changed, serene almost for them.
I asked the serf what purpose the chamber served. He only whispered: “They listen.”
When I sought him again, he was gone from the muster rolls. No record. No reassignment. No trace.
I should not have written this. I do not know why I have.
[Fragment ends]
X. Addendum: Unauthorised Speculation
This section was appended to the dossier without Conclave approval. Its author is unknown. Its contents remain unverified and are preserved only for completeness of record.
There are whispers — faint, persistent, and troubling — that the Carcharodons bear echoes of a lineage long thought erased. Not in their gene‑seed, which remains stable, nor in their recorded history, which is fragmentary at best. But in their behaviour. Their rituals. Their silences.
The Hereticus recognises the danger of such rumours. The Imperium has long maintained that two of the Emperor’s sons — the primarchs of the II and XI Legions — were expunged from all record, condemned to oblivion by edict and decree. Their statues removed. Their names struck from the rolls. Their Legions scattered or destroyed. Their memory forbidden.
Yet certain patterns trouble the eye:
The Carcharodons’ pre‑Imperial rites, older than the Creed.
Their Edicts of Exile, mirroring the language of ancient censures.
Their silence regarding their origins, absolute and unbroken.
Their reverence for dormant Dreadnoughts, treated as ancestral spirits rather than war machines.
Their use of archaic High Gothic, consistent with early Crusade dialects.
Their nomad‑predation mandate, reminiscent of punitive Legions deployed during the Rangdan Xenocides.
None of this proves anything.
All of it proves something.
The Conclave officially rejects any connection between the Carcharodons and the Lost Legions. Such speculation is heretical, unfounded, and destabilising.
And yet…
The observer’s testimony contains a final, half‑corrupted line — a fragment that survived deletion:
“They remember what we were ordered to forget.”
Whether this refers to the Chapter’s ancient mission, their forgotten origins, or something far older and more dangerous, the Hereticus cannot say.
But the rumour persists. And rumours, in the Imperium, are often the first sign of truth clawing its way back into the light.
Next in the Hereticus Trilogy: The Exorcists
The Conclave’s work does not end with the Carcharodons. If anything, their dossier has sharpened a deeper, older concern — one that has lingered in the vaults of the Ordo Hereticus since the days of the Thorian schisms.
There exists a Chapter whose very creation defies doctrine. A Chapter trained not to resist possession… …but to endure it.
Their initiation rites are forbidden. Their origins are sealed. Their purpose is whispered only in the darkest chambers of the Inquisition.
They are the Exorcists — warriors forged through sanctioned damnation, their souls tempered in the very fire the Hereticus was created to extinguish.
If the Carcharodons are a relic of a forgotten age, the Exorcists are a wound the Imperium inflicted upon itself.
In the next instalment, the Conclave turns its gaze upon them. What we find there may test the boundaries of orthodoxy more than any Chapter before.
Prepare the seals. The next case file opens soon.
- Until The Next Hunt -











