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cardinalcanis · 3 days ago

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CODEX: The Viridian Phantoms

Summary: I did a thing. Been wanting to write about the custom space marine chapter that has been eating my brain the last few days. The Viridian Phantoms, my loyalist Mortarion successor chapter. They have been SO much fun to write and will totally do more things with them in the future. They are my first ever custom chapter so I would LOVE LOVE LOVE your reviews and opinions about them.

TW: People WAY too comfortable with death.

Word count: 3314

"Can I make my own fanart/OCs/head cannons/fics about/with the Viridian Phantoms?" First of all I will die <3, second of all, of course! As long as you credit me as the og creator of them I have no issue with it!

Tag squad (let me know if you wish to be tagged on stuff): @druidwolf21 @wolf-feathers12 @artemisareia @cosmic-cryptid-from-beyond @adhd-fandom-hyperfocus

@gallifreyianrosearkytiorsusan @kit-williams @egrets-not-regrets @jaghatai-khock @horuslupercal @moodymisty

@sinistermojo @beckyninja @justallll @ms--lobotomy @pluvio-tea @lemon-russ

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General information:

“We are Death, so Humanity may live.”

-Chapter name: Viridian Phantoms.

-Other nicknames and given monikers (at least the nice ones): Angels of Krieg, The Bone Collectors, Krieger Kites, Jumping Tanks, Climbing Banshees.

-Loyalty: Loyalist.

-Homeworld: Krieg.

-Symbol: A ghostly skull wreathed in chains.

-Colors: Light viridian green accented with black and silver.

Origin:

“Father, see your children, battle-worn and pale,

Holy Chains and hooks prepared,

Father, see your children, dead but not failed,

By their blood may the corruption be cleansed.”

After the events of Baal and the Plague Wars Belisarius Cawl saw the necessity of having more resistant troops. Capable of weathering extreme conditions, facing bio-monstrosities and gargantuan enemies, and being Immune to plagues and other chaos or mortal-made maladies.

The Viridian Phantoms were born from Cawl’s experiments, using a modified strand of Mortarion’s gene-seed to create warriors who could endure almost everything. They stand as an act of defiance to Roboute Guilliman’s will in the face of what he considers advancements in the name of the Imperium’s survival, magnificent discoveries that honor the Omnissiah. Making them only female was the loophole he found to make their existence possible, even though kept in secret for many years. Recruited and trained on Krieg for their innate resilience and loyalty, these Marines are honed to become the embodiment of human perseverance.

They possess their gene father’s legendary resistance combined with an aspect of Mortarion not exploited by the previous Death Guard; his untapped psyker potential. The Viridian Phantoms are unyielding assaulters, designed to weather any blow; be it a plague, environment non compatible with life, or physical force. Their combat style is defined by their heavy armor, equipped with hooks and chains, allowing them to latch onto massive foes, scale them, and pull them down into submission so they can be butchered. Despite their heavily reinforced armor, their biomantic prowess allows them bursts of agility, enabling them to jump over large enemies and strike from unexpected angles. Even other Astartes speak about a sense of uneasiness seeing what in all senses is a terminator-like unit swinging in the air and climbing light as a feather. This makes them formidable in melee, where they wield chainswords and scythes with deadly precision. Learning from the Thousand Sons’ mistakes, they do not over rely on their psyker powers, biomancy is meant as another tool in their arsenal. Their uncanny resistance aided by biomantic regenerative capabilities make them the perfect unmovable wall for humanity.

Made behind the primarch’s back:

“Father, we are ready, take us if you must.”

Cawl’s unprecedented authority within the Mechanicus and his status as the architect of the Primaris project provided him with enough leeway to conduct this experiment. His known… quirks and disregard for strict Imperial protocol helped him fly under the radar. His projects are already known for secrecy, but even with the trust on his skill and status he couldn’t afford for Guilliman discovering the Phantoms before they were ready.

The choice of Krieg didn't only rest on its hardy loyal woman but also for its isolation, secrecy of what truly goes in their underground hives and lack of general scrutiny from the Imperium. Krieg’s conditions allow for secretive experimentation; the people of Krieg, known for their discipline and loyalty never questioned nor revealed Cawl’s activities, they were ordered not to anyways. It is said that long lines are made to this day for parents to proudly offer their daughters for testing, even though they didn’t know what it was about, the Emperor was looking for female children so they served accordingly.

Cawl carefully controlled who knew about the Phantoms’ existence and purpose, involving only trusted Mechanicus personnel and Kriegsmen who were at a need to know bases of their assignment and sworn to secrecy. Any record-keeping or tracking was obfuscated through a complex mix of bureaucracy and Mechanicus’ religious beliefs, already only revealing the biggest secrets to the worthy in the Omnissiah’ eyes.

The Phantoms were obviously kept isolated from other Astartes chapters and Imperial forces to avoid detection. In their deployments, the Phantoms engaged enemies with minimal support, focusing on missions that required little to no backup. Training and conditioning was completed in Mechanicus-controlled facilities under Cawl’s lock and key, keeping them away from inquisitive eyes. He implemented protocols restricting their interaction with other Imperial personnel, ensuring their knowledge and exposure remained minimal.

The Phantoms’ early deployments were limited remote or particularly hazardous battlefields far from populated areas or Imperial forces, where only the toughest units were expected to survive. These are regions affected by warp taint, plague, or xenos threats, where the survival of any unit would be notable but not easily verified.

Cawl specifically chose high-mortality missions where the Phantoms could demonstrate their resilience. By deploying the Phantoms to zones where no ordinary Astartes force could feasibly operate, Cawl ensured they’d operate in isolated conditions, where successful missions were difficult to track or verify independently.

Later on he made use of trusted Rogue Traders and Mechanicus explorator missions to test the Viridian Phantoms in the fringes of the Imperium.

Reports and data on the Phantoms were filed under vague terms or ambiguous classifications, described in ways that did not reveal their true origin or makeup. Listed as specialized Krieg regiments or other “experimental” Mechanicus units when deployed. These reports kept them concealed, making it appear as if they were simply part of a contingent of the Death Korps or other Mechanicus-approved forces rather than a unique chapter of Astartes.

Physical appearance, chapter culture and personality:

“Through pain and flame, we fall

And if you can stay, sister, then we'll show you the way

To return from the ashes we call.”

Moration’s gene seed gives the Viridian Phantoms a formidable yet eerie appearance that sets them apart from other chapters. Considered some if not the tallest Primaris Marines, they are built like a block of muscle, needing great upper body strength to hold their full armored weight while hanging mid air. Their skin turns a pale white or slightly grayish hue with visible veins. Their hair typically ranges in shades of white, silver, or light gray. They tend to keep their hair very long and extensively braided. Their eyes are described as a ‘pale gaze’ and ‘lifeless’ or with an almost glassy appearance, people claim that the Phantoms' gaze is ‘detached’ looking through them rather than at them. The intensity of their gaze is increased by how little they tend to blink unnerving those unaccustomed to their manner. All of these add up into giving them their phantom-like appearance they are named after.

They barely speak, when they do, it is done with precision and brevity. There is no room for flowery language or embellishment; they say what needs to be said and nothing more. Their speaking cadence tends to be emotionless and unenthusiastic, not due to lack of emotion but their little interaction with non Phantoms. As very sensible biomancers, they are constantly in touch with the inner processes inside those around them, including emotional responses. Spoken and gestured communication is just a poor mockery of the higher level subtle, unspoken connections they share. This makes them seem distant or even cold to those who rely more on direct communication, this lack of visible emotion could create misunderstandings or discomfort.

The Phantoms struggle hard to connect with outsiders, as they find typical methods of bonding cumbersome or shallow compared to the natural closeness they share among themselves. When interacting with other chapters, they struggle to adapt to more conventional forms of camaraderie, finding it challenging to communicate complex intentions in ways others understand and at the same time making them highly aware of the moods or intents of others. Knowing of the fear, frustration, anger and paranoia they cause first hand; but without the skills to properly address other's concerns.

This sensitivity fosters deep bonds between the Phantoms, allowing them to anticipate and understand each other in ways that most Astartes can’t. It creates a near-unbreakable trust, as they’re constantly aware of each other's emotional state, intentions, and even physical condition, reinforcing the idea of sisterhood beyond the individual. The electrical discharge in one sister’s muscles ordering to lift a bolter is sensed by the others, copying the same movements, making them capable of reacting to their environment like a well coordinated flock of birds. This gives them an almost meditative focus in battle. Their awareness of their sisters’ movements allows them to coordinate without spoken commands, making them seem eerily calm and united.

Krieg’s women to the core, their loyalty to the Emperor and their battalion is absolute. They see themselves as living tools of the Imperium, willing to sacrifice anything, including their lives, without hesitation. This unwavering dedication makes them reliable but can come across as suicidal, looking for death in death’s sake. Each Phantom believes their existence is expendable if it means the mission succeeds or the forces of humanity are protected.

The Viridian Phantoms also hold a profound respect for their fallen allies, whether they are their own sisters, other Astartes, or even mortal guardsmen and civilians. They view these fallen as martyrs of the Emperor’s cause. As a tribute, unless the remains are corrupted by Chaos, Phantoms often collect small pieces of armor, bones, cloth, strands of hair, or even rubble from the battlefield and fashion them into beads and charms. These adornments are extensively braided into their hair or hung across their weapons and armor, serving as personal memorials and tokens of respect. Teeth, in particular, are a favored keepsake known among the Phantoms as "flesh pearls," close second to hair which they braid with their own.

With so much of their time spent among the Mechanicus it is of no surprise that one of the most significant aspects of their culture is the ceremonial tending to their gear and weapons. Each battle-sister sees her armor and weapons as an extension of herself, considering them "bound" to her flesh and spirit. Outside of battle, Phantoms often spend hours in silent preparation, maintaining and blessing their chains, hooks, and weapons in a ritual that reinforces their connection. It has been reported that this strong belief on their gear as part of their flesh has ended into several occurrences where their biomantic powers also restore cracked ceramite or instances where guns keep shooting when it is obvious that the magazine must have been emptied.

This meticulous care for their gear makes the Phantoms selective about who is allowed to handle it. They permit only trusted Mechanicus priests or highly skilled serfs with whom they have overseen working many times to assist in maintaining their equipment. These chosen few would be expected to respect the Phantoms' many rituals and understand the reverence the Phantoms have for their weapons and armor. These selected few granted the honor of working with the Phantoms' gear have to undergo bonding rites, long meditations and purification rituals to align with each specific Phantom that has chosen them to tend to this sacred part of themselves to the highest of standards.

The Phantoms’ secret rites, meditations and mantras help them both handle their oversensitivity to all life around them and reinforce their religious adoration for death and sacrifice. The Phantoms hold pre-battle rituals where they recite personal death vows. These vows are spoken in low, emotionless tones, acknowledging their acceptance of death and pledging to die honorably if it serves the Imperium. Followed by their well known Death Hymns which they sing in ritual and even during battle, Viridian Phantom Death Hymns are the only instance of them raising their voices and carrying emotionally charged statements. They most are directed to a figure they ‘Father’, if it refers to either The Emperor, Mortarion or both is unknown. These chants carry an ominous, almost haunting quality, blending grim acceptance, defiance, and reverence for their purpose. The chants are rhythmic, echoing through the battlefield and unnerving allies and enemies alike with their strange, almost theatrical longing for death. They possess sections where the volume crescendos to shouts or quiets to an eerie whisper, transitioning between powerful declarations and subdued, haunting verses.

Currently, the Viridian Phantoms have no official Chapter Master due to their uncertain experimental state. Leadership has fallen by the battle sisters consensus upon Revenant (Captain) Lena Arendt, a figure respected for her exceptional combat skill and biomantic abilities. She is often referred to as the ‘Ceramite Fae’, due to even amongst other Phantoms her seamless grace mid air while fully armored creates the illusion of effortless flight. A fatal flaw her and many phantoms inherit from Mortarion is how much of a hard time they have at asking for help from non Phantoms, maybe not much out of their gene seed but their desire to prove their chapter is worthy to exist.

Gear and unconventional battle tactics:

“We are the scythe that reaps the corruption,

We are the chain that bounds the monstrosity to a kneel,

We are the knife that carves the names of the fallen onto our enemies,

We are the Emperor’s unbroken might,

We are his bleeding sacrifice so we could still have a light,

We are to fall so the many may rise,

We are the Viridian Phantoms,

And we are Death, so Humanity may live.”

As mentioned, The Phantoms hold close reverence to their gear and decorate them extensively with allies’ remains, one of the most memorable are their oracles (librarians) and gravekeepers’ (chaplains) complex teeth veils. Their armor is modeled on the reinforced Mark X, heavily modified for maximum durability. The plating is reinforced to withstand corrosive environments, disease, and warp-tainted toxins, often appearing thicker and more robust than standard armor. It is painted in a ghostly viridian green with black accents on the trim and silver detailing. Their helmets’ visors emit a ghostly pale green glow, most of them are inscribed with small runes or faint biomantic symbols.

Each Phantom carries many sets of chains and hooks designed for their signature combat style. These chains are attached to their gauntlets or armor and can be used to latch onto large enemies, structures, or terrain. The chains have runic symbols carved along each link alongside attached beads and charms, and when combined with their biomantic abilities, they become unbreakable extensions of the Phantom’s will, allowing them to anchor enemies or secure themselves in chaotic battles. The hooks are often engraved with the names of fallen sisters or even fallen guardsmen or civilians whose names they find on dog tags and forgotten personal effects among the rubble.

The Viridian Phantoms favor chain swords and most importantly scythes for close combat, weapons that symbolize their affinity for melee and their willingness to face foes up close. All of them also have the ability to extend into chain and grappling hooks. Their scythes are heavy, with blade edges honed to a sheen, used for sweeping attacks against larger foes. Made to grab, mutilate and disembowel in single clean swipes. Alongside their melee weapons they can also favor large shields that chained together create shield walls to push back at the latest of waves.

They are no strangers to range weaponry, which even if they aren’t their favored, each is shown equal love and customization as the melee does. Sometimes even consecrating every individual bullet in day or even week long rituals meant for deep meditation and calming their psyker abilities.

Even though they may be great assets for them, The Phantoms shun the use of chemical and viral weapons of any kind in their fight to distance themselves from their genesire’s legacy and fall into nurgle’s claws.

Appart to what they are known for, falling gargantuan monstrosities; the Viridian Phantoms' unparalleled resilience, little regard for their own lives and biomantic abilities would lend themselves to shockingly bold, almost reckless battle tactics and strategies. These tactics seem suicidal to other Space Marines and not Codex Compliant at all:

-Shield killbox: The Phantoms would march forward under heavy enemy fire interlocking shields with one another. Using their scythes they would pull and mutilate anything that comes closer, then throw the helpless bodies behind them where other sisters await to finish them up. Functioning as an efficient assembly line of carnage.

-Fire on my position: In coordination with allied forces, the Phantoms move into a position where friendly heavy artillery or orbital bombardment is directed. Knowing their unique resilience, they would withstand the controlled onslaught that devastates their foes, emerging from the smoke and flames, most of the time.

-Living bait: Phantoms would feign retreat or send vulnerable looking single units, drawing enemy forces into pre-arranged kill zones laden with explosives. Then, they would walk on the trap while still in the blast radius, relying on their enhanced durability to survive. Phantoms might also herd unknowing enemies into the blast radius of allied tanks. Or charge headlong into fortified enemy positions or into the path of tanks, absorbing fire and drawing attention while the rest of the battalion encircles the distracted enemy.

-Suicide landings: Phantoms generally do not fight alone unless they have a strategic purpose. Like sending one charging (or jumping off flying vehicle) into enemy positions or even the heart of their formations with explosives strapped to their armor, activating them upon impact. This act would be often followed by the surreal sight of the Phantom emerging from the carnage, bloodied but alive.

-Walking beacons: They do have a unique skill to escort survivors through dangerous zones normal humans would not survive. Making the helpless human stay close to them inside their auras so fire, disease or acid would not hurt them or would not feel the pain and heal quickly. They tend to cover the survivors' eyes and even ears so they feel no fear or run away in the presence of danger, as running away gets them out of the Phantom's aura, which means they will succumb to the factors the are being protected against. And the people's trust and faith that the Phantoms can protect them actually makes it easier to work their biomancy on them.

Cawl’s secret brought to the light:

“Hear hear, Father, we're all going to die

Father, we're all going to die

Do not sing me any farewells, for me you must not cry,

hear hear, Father, we're all going to die.”

The Viridian Phantoms' first encounter with Guilliman was intense and deeply scrutinized. After proving themselves time and time again completing dangerous missions in secret under Cawl’s direction, the Phantoms were finally brought to Guilliman’s attention as a fully-formed, specialized force created to withstand the most hostile environments and fight the Imperium’s most monstrous foes. Masking themselves as just another battalion of the Unnumbered Sons, with the help of voice modulators in their voxes making them sound masculine (aside from restricting their vox channels when singing).

They were deployed alongside his forces in a brutal battle. Observing them, Guilliman noted their resilience and uncanny coordination as they maneuvered in unison, taking down enormous threats with sacrificial tactics. The Phantoms suffered grave wounds but continued to fight, showing an almost eerie selflessness that unsettled many nearby Ultramarines.

After the battle, Guilliman confronted the Phantoms directly, demanding to know their origins. Their leader, Revenant Lena Arendt, revealed their loyalty and their gene-sire without hesitation, asserting their purpose and loyalty to the Emperor, not to Mortarion’s legacy. Guilliman, appalled by Cawl’s audacity, proclaimed that their very existence was an affront to the Imperium and must be erased.

The Phantoms responded by raising their bolters to their own heads, ready to end their lives at Guilliman's command. Stunned, Guilliman halted them. They remain a battalion awaiting Guilliman’s final judgment, will they be eliminated? Given a suicide mission hoping they never return? Will they ever back their birthright as the 14th? The future looks bleak and uncertain for the Viridian Phantoms. But the primarch must hasten as talk is spreading.

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