Gaiaterra: Elysea's Conflict/The Ten Loyalist Primarches

The Horus Heresy was, and still is, one of the greatest failures the Coalition had with their greatest protecting fighting each other, as not only did the Astartes fell but so were the Primarches meant to lead them, with only ten out of the twenty Primarches having stayed loyal in the war, whose legion now serves the Coalition today.

Status: Deceased
Also known as the "Great Angel" and the "Brightest One" during her lifetime, Sanguinia was the Primarch of the Blood Angels Legion of Space Marines, known for being the only Primarch to possess giant, angelic, wings that granted her flight. She was killed during the climax of the Horus Heresy at the Battle of Kara-A-Karak defending Wodin from the Warmaster Horus aboard his flagship, the Battle Barge Vengeful Spirit.

Though Horus slew Sanguinia, who had once been his closest and greatest friend amongst the other Primarchs, Coalition legend holds that it was the chink in Horus' armor created by the Angel that allowed Wodin to slay the Arch-heretic and thus prevent Gaiaterra from falling to the corruption of the Ruinous Powers of Chaos.

Status: Alive
Sometimes referred to as the "Avenging Son," "The Victorious," "The Master of Ultramar" and "The Blade of Unity," Roboute Guilliman is the primarch of the Ultramarines Space Marine Legion. He is the current head general of the Coalition and the Council Adviser/watchman.

Held by some as a paragon among the Primarchs, Roboute Guilliman was as much a patrician statesman and empire-builder as he was an indefatigable warrior.

A being of preternatural intelligence, cold reason, and indomitable will, Guilliman forged his XIIIth Legion into a vast force of conquest and control, a weapon by which he made himself the master of a stellar domain in the Eastern Fringe of the Coalition, the Realm of Ultramar, which during his lifetime has a large territory.

Guilliman was a charismatic and gifted leader, beloved of his people and singularly capable of compartmentalizing incredible quantities of information. He was an organizer, a logistician, one capable of turning the wildest theories into practical reality and rendering order from chaos.

The most strategically gifted and tactically balanced of all the Legiones Astartes. The Ultramarines fought with exceptional efficiency. They drove the foes of the Coalition before them, their armies fighting like intricate and perfectly tuned machines to swiftly and decisively outmaneuver every foe.

When the Horus Heresy set the Coalition ablaze, Roboute Guilliman fought with loyalty and determination for the Coalition that he believed in with all his heart. When he thought that the Coalition had fallen thanks to Chaos spies giving misinformation, the primarch established a new seat of power on Macragge, planning to preserve the Coalition within his own Realm of Ultramar as the Imperium Secundus.

When Guilliman later learned that Karaz-A-Karak still stood, he did everything in his power to ensure that he and his loyal kin could fight with their homeland in the final battle against Horus. Though his efforts benefitted many, Guilliman himself reached Karaz-A-Karak too late, a fact that would torture him for decades to come.

In the wake of the Horus Heresy, it was the Ultramarines primarch who wrote and instituted the Codex Astartes, a key volume that laid out the proper tactics and military organization for the majority of Loyalist Space Marine Chapters now in existence.

Guilliman is the primarch who took up Wodin's burning blade and became the lord commander of the Imperium and the Imperial Regent, serving amongst the Council alongside his brother Rogal during the period of the reformation and reconstruction of the Coalition administrative and military structure called the Time of Rebirth. Guilliman single-handedly reshaped the Coalitiion after the Horus Heresy, taking the lead role in reforming its bureaucratic and military apparatus following the burial of Wodin and Sanguinia.

Roboute Guilliman is also one of the few Loyalist primarchs still alive. Following the Great Scouring, Guilliman and his Ultramarines met the Votann's Children Traitor Legion at the Battle of Thessala in (insert) V.C., where his corrupt sibling Fulgrim mortally wounded him with a slice to the neck made by that Daemon Primarch's Chaos-tainted blades.

So it was that the dying Roboute Guilliman was put into suit of power armor specially forged by the Dwarfs and empowered by the Alin and Coutl magic. Saving the Primarch but forcing him to forever be entombed in it, lest the blade's poison kills him.

Today Guilliman still stands by the Coalition Council, always being the voice to make sure that they don't make rash decisions and watching them to make sure there was no usurper or assassins. And if the Coalition he fights to protect is under a great threat, whether by Chaos or other superpowers, he will march out the Council halls and lead the Coalition to battle.

Status: Alive (self-exile)
Known as "The Vigilant," the "Praetorian of Durin" and the "Unyielding One," and to his Astartes by the "wall-name" of "Defiance," Rogal Dorn was the primarch of the Imperial Fists Space Marine Legion and one of the greatest heroes in the history of the Imperium of Man.

A being of thunderous zeal and stone made manifest is how many described the primarch of the VIIth Legion. He had a stern and naturally unsmiling face, topped with an unruly shock of short, bone-white hair and trimmed horseshoe mustache. His zeal was the fire of a son who believed in the dream for the Coalition without reservation and without question.

To Rogal Dorn there was no higher purpose to the existence of the Legiones Astartes than the unification of the Coalition, and the illumination of the Coalition ideals. This idealism drove Dorn and his Legion ever onwards, never compromising, never stinting in any aspect of duty. The stone in his soul was his ability to bear whatever is needed of him, an unyielding nature, which made him both a master of defense in war, and an indomitable aggressor on the attack.

If the primarchs were the nature of men split like white light through a prism's rays, then from such a point of view, Rogal Dorn was the people implacable disciple in the pursuit of his cause given flesh; without compromise and in who loyalty and duty was as integral as blood and breath.

It was perhaps for this reason, that even before the betrayal of Horus, the Council named Dorn the "Praetorian of Durin," and drew him to his side far away from the Warmaster and his newly-forged command. To some among his primarch siblings, this served only to distance him and his Legion further from them, and those among them who had seen the sins of hubris and obstinacy in Dorn's undoubted stubbornness and pride, saw this aggrandizement as a further cause for discord and disquiet.

It was Dorn who supervised the construction of the formidable defenses of the Imperial Palace in the (insert) Mountains on Durin that would be sorely tested by the forces of Chaos during the epic climax of the Horus Heresy in the terrible Siege of Karaz-A-Karak.

And it was Dorn who would fight within the Vengeful Spirit alongside his brother and sister Wodin and Sanguinia, losing his right hand in the battle which is now displayed within the Coalition, who would find the broken body of the Wodin upon the battleship Vengeful Spirit after his terrible final duel with Horus. Dorn who was right by his brother's side and received his last spoken instructions to make sure such an event never happen again.

And in the aftermath Dorn refused to have his hand reattached or be given a prosthetic, saying that the loss of his hand is punishment for failing to save Wodin and Sanguinia, and worked alongside his brother Roboute in rebuilding the Coalition, making sure that such inner strife will never happen again, before secluding himself within the peak of (insert mountain) in penance. But whether the Coalition faces a threat they can't handle or the great beast of chaos the Praetorian of Durin will rise from his exile and don his armor again, with a heavy bolter/chainsword "Hand Of Dorn" mounted on the stump of his lost hand, and march to protect the nation he failed once, and once only.

Status: Unknown
Also known as "The Liberator," "The Deliverer," "The Raven-Lord," "Chooser of the Slain" and "The Shadowed Lord," and, affectionately/in secret by Sanguinia and Vulkan, "CoCo" (much to her embarrassment), Cora Corax is the currently missing primarch of the Raven Guard Chapter of Space Marines.

Corax presented a striking countenance, at least when she wished to be seen. Her skin was alabaster white and she possessed shoulder-length hair as black as the feathers of her namesake, the raven.

Most remarkable and unsettling were her eyes, which appeared as entirely black shards of solid shadow. Her sable power armor was edged with fine, golden figures and upon her back was mounted a jetpack formed into a pair of articulated, raven-like pinions that she wielded as a murderous, blood-edged weapon of war.

Like most of the primarchs, Corax was blessed with an extensive armory of artificer-wrought weapons, but she most often bore to war a pair of meter-long Lightning Claws and a coiled whip at her belt. The latter was carried as a reminder of the cruelty enacted upon the people of her home of Lycaeus by the tyrannical guild of Kiavahr and with it countless enemies were laid low.

Though few even amongst her Astartes know of it, Corax is blessed with the ability to pass unnoticed should she will it, this preternatural ability allowing her to slip from the perception of her enemies even when she was in plain view.

After the near-destruction of her XIXth Legion during the Drop Site Massacre on Istvaan at the start of the Horus Heresy, Corax was desperate to rebuild her Legion. With the Council's permission, she and her Astartes delved deep beneath the Imperial Palace to recover the advanced genetic knowledge that the Council had used to create the primarchs.

Corax then made use of these techniques and a recovered, undifferentiated primarch genetic template to accelerate the development of the new Raven Guard Astartes. The repercussions of those actions came back to haunt her, leading Corax to eventually mercy kill to all the twisted, mutant spawns who emerged as the result of her experiments.

In the wake of the Horus Heresy, Corax vanished into the Eye of Terror in search of penance for her shame. Her current whereabouts and status remain unknown to the Raven Guard and the Coalition.

Trivia

 * With all Astartes in Gaiaterra being intersex the Primarches' genders are different from 40k, with three being male, three female, and four non-binary.
 * Roboute, Wodin (OC primarch, based on the missing primarch, for the Blood Ravens), and Rogal remain male
 * Sanguinius (Sanguinia), Leman (Lemia), and Corvus (Cora) now identify as female
 * Ferrus, Jaghatai, Lion, and Vulkan now identify as non-binary