The 2 Lost Primarchs Fully EXPLAINED (Warhammer 40K) 

If I put on my plasteel foil hat, I'd say that the missing Primarchs aren't dead.. perhaps the 19 believed they are, but I suspect this is a cover orchestrated by the Emperor and the Sigilite. I think they're alive and kept in reserve to be deployed during the events of the end times. A sort of secret, apocalypse fighting ace in the hole for the Imperium.

The two missing primarch/legion are called "the botched paint job" and "the unpainted"

My theory? The 2nd and 11th Primarchs opposed The Great Crusade. During The Age of Strife, many small empires grew up. Some worlds had managed to retain their technology and culture, and they were thriving when the Emperor arrived. All of them were eventually absorbed or destroyed during the Crusade. I think the 2nd and 11th Primarches were found on two such worlds, and had been raised with much more liberal ideals than the others. They were willing to help fight against hostile xenos, but not against other human cultures, and when their own homeworlds were purged, the two lost primarchs turned on the Emperor. All records of their rebellion were expunged - not because of what they did, but because of WHY. Rebelling because you were corrupted by warp gods is one thing, but rebelling to save blameless humans who were too civilized for the Emperor's liking, . . .

I believe that Leman Russ did indeed personally kill one of the lost Primarchs judging from some of his dialogues, but its possible that the other one could likely be trapped in the imperial palace, when you consider Dark Cells. Imagine a Lion situation where the 2nd or 11th is an aged Primarch in a Dark Age archeotech style cell within the Dark Cells. A hundred Shadowkeepers standing vigil forever, outside your room.

If you're new to 40K Lore, the out-of-lore reason for missing Primarchs pre-dates the creation of Black Library, and goes all the way back to the 2nd Edition, I believe. GW wanted players to be able to create Chapters from outside of the established Primarch lineages. Most of these theories were born out of the Horus Heresy series.

The Emperor considered long, as He often did, before giving an answer. 'In the lime of the Aegypta there was an empress named Hatshepsut. By all accounts of her that survive she was an equitable and proficient ruler, by the standards of her time. She rebuilt her land in the wake of war and occupation, erecting great monuments and bringing prosperity to her people. She reassembled the Aegypta's navy, using it to re-establish their old empire, and launched military campaigns against the nations who had once been their oppressors.' ’A legacy whose parallels are not hard to see,' said the Lion. 'And yet those who came after her did all within their power to ensure that she would have no legacy. Her name was chiselled from every monument, her every deed and triumph stricken from public record. Even her body was removed from its royal tomb.' 'Why, if her reign was so equitable?' 'Because those who succeeded her desired it. Because sometimes what comes before is too troublesome to be paved over in rockcrete, to amend with a monument to compliance or a golden aquila on an Imperial flag. Sometimes it is enough only that it be destroyed, that no trace of it but darkness and ash be left to endure.' ‘And yet history still remembers this empress.' ‘The Emperor Thutmose the Third did not have his Dark Angels.' This quote from "Lion, Lord of the FIrst", implies the Dark Angels had something to do with erasing people from history, their involvement in the Rangdan genocide, reinforces the idea that the Dark Angels possibly had something to do with one of the missing primarchs.

The Soul Drinkers could be such a chapter that originated from one of the lost Legions. They were originally a second founding Imperial Fists Chapter, but was later found out to be not of Imperial Fist stock but of an unknown Legion at that time of the testing.

I legitimately know what happened to the lost 2nd and 11th, they are in a box in my attic somewhere, I just can’t remember exactly where. One is called “Legion of the Sprue”, and the other is “The Primed Ones”.

I feel like at least one of theme was a psychic blank. And was immune to the emperors physic powers to such an extent he could actually straight up counter act the emperors psychic might.

Head canon: Tyberos The Red Wake is the Primarch of the second legion.

I strongly believe that the one Leman killed was the 2nd, because of a single entry from a Custodies mentioning a large primarch sized door with the number 11housed within the vaults that they guard alongside various chaos and xenos artifacts. Apparently there's someone or something that can be heard behind that door

The 2 legions are gone because leman Russ didn't know roman number

Something you might want to consider is that the order of Primarch discovery follows Dante's Inferno and Paradiso specifically, the circles or spheres corresponding to each primarch's personality/themes/flaws exactly, which was Rick Priestley's intent. The 2 redacted ones probably fit Purgatios "ex-communicate and late-repentant" themes, as indicated by the hints towards their natures and fates respectively over the years.

What happened was the 20th primarch, the OG Alpharius was found during the rag war working for the rags. As such he was killed and had to be replaced as the 20th is the secret police. No one primarch was up to the task so the primarchs of the 2nd and 11th would jointly control the legion and become Alpharius and Omegon. Since the secret police need to be secret everyone got mind wiped and hence the need to destroy all evidence of their existance.

I go with 3 possible answers 1. Wanting to create something similar to the Greater Good, where humanity took in Xenos as client states/allies. 2. Going full transhumanist and basically wanting to turn humanity into something like Necrons. 3. One of them was secretly trying to bring back the pre-Emperor religion, to try and birth/restore humanity's previous god as a warp entity protector.

The Lost Primarchs are clearly a way to get players to imagine their own. Such as mine...

My theory: The II Legion's primarch was a pacifitic "zen master" of sorts, and had moved beyond the wish to fight or kill. No greater betrayal of the Emperor's purposes could be imagined, and so the latter killed him and his children alike. The XI Legion's primarch was a psychopath whose bloodlust surpassed even Angron's or Konrad Curze's. Having no use for this in itself, the Emperor purged him and many of his children, and had Guilliman take in hand the more tameable examples of the XI Legion.

I’m hoping for this 🙏🏻🙏🏻 In the darkest depths of the Imperium, hidden from the prying eyes of friend and foe alike, the second and eleventh legions bided their time. For millennia, they had patiently awaited the call, their purpose veiled in secrecy. Now, as the Tyranid threat loomed over Terra, the time for their return had finally come. Across the galaxy, the tendrils of the Tyranid Hive Fleet encircled the bastions of humanity. Desperation and despair suffused the air as the defenders of the Imperium fought tooth and nail to hold back the unrelenting swarm. But hope flickered in the shadows, for the Emperor's hidden warriors prepared to reveal themselves. In the heart of Terra, the High Lords of the Imperium convened a clandestine meeting. Within the chamber, secrets were shared, oaths were renewed, and the existence of the second and eleventh legions was unveiled to a select few. Their task was to turn the tide, to safeguard the cradle of humanity from this devouring menace. With the order given, the hidden legions emerged from the shadows. The second legion, clad in midnight-blue power armor, bore the emblem of a blazing white phoenix. The eleventh legion, their armor shimmering with iridescent hues, displayed a sigil of a coiled serpent. Together, they advanced, a force of myth and legend. As they stepped onto the war-torn soil of Terra, a ripple of astonishment swept through the defenders. Their arrival inspired awe and rejuvenated the weary souls who had fought tirelessly. The second and eleventh legions took their positions, their tactical brilliance immediately apparent. Utilizing ancient strategies and employing devastating weaponry, the legions struck with precision and coordination. The Tyranid horde, caught off guard by the sudden appearance of these enigmatic warriors, faltered. The defenders of Terra rallied behind their saviors, their morale reignited. The battle raged on, the skies ablaze with the fury of the clash. The second legion, with their phoenix emblem, unleashed cleansing flames upon the Tyranids, reducing their ranks to ash. The eleventh legion, their serpent insignia glinting with deadly resolve, struck with venomous precision, severing the synaptic links between the hive mind and its bioforms. As the dust settled and the remnants of the Tyranids scattered in retreat, the defenders of Terra stood in awe of the second and eleventh legions. Their mission was accomplished, their duty fulfilled. With solemn nods and silent acknowledgments, the hidden legions vanished once again, retreating to the shadows from whence they came. In the aftermath, tales of the second and eleventh legions' return spread throughout the Imperium. They became legends, whispered by those who had witnessed their valor. Their actions served as a testament to the indomitable spirit of humanity and the hidden strength that could emerge in its darkest hour. And so, the second and eleventh legions returned to their hidden sanctuaries, awaiting the next time the Imperium would need them. Their loyalty and sacrifice would forever be etched in the annals of history, reminding the Imperium that even in the face of overwhelming darkness, hope could be found in the most unexpected of places.

Here’s my wild theory: Omegon and Alpharius were 2 and 11. They pulled a wild gambit and became 20 as one Primarch leaving 2 and 11 empty

I like to think that the purged fell to chaos, whilst the forgotten found out about it. Then the two fought to the death, or maybe one was left but the emperor used the dark angels or space wolves to clear up the mess and make the situation disappear to hide the existence of chaos, possibly imprisoning the survivor. And the situation fits in with the fact that the two legions were made by GW to be blank slate legions filled in with the players imagination.

I sould kinda like the idea that one of them was no warrior. He showed compassion but lacked the necessary cruelty and heartlessness you need in war. Either he refused to fight entirely (hence he was called a hypocrite) or was, as the Emperor regards his sons as tools, not a tool for warfare but for reconstruction and governance. So a tool for peace times. And so the Godemperor kept him locked away and hidden so he cannot be corrupted by Chaos. And when the bloodshed is over and the galaxy lies in ruins it's his turn to shine.

Another theory: they were minor chaos/warp gods

i think both primarchs wr gone by the time Corax was found if i remember correctly

For me, at least one of the lost primarchs had to had died and the imperium had to cover up there death to keep the image of the space marines being invisible, got to keep an image.

That was one of the better videos regarding the lost Primarchs.

i like to imagine that one of the two was loyalist, and the other was traitor, which would make it a perfectly even split. and it could be that one wiped out the other so this was hidden with both being wiped from history

I’ll be darned, it’s the guy who does MindQ! Moment I heard your voice I’m like “Wait a minute...” 😮 Take my subscription! 👍🏻

TL:DR ones dead at the hand of Russ on the Emperors orders the other is in prison under the Emperors palace

I think carcharodons are a remnant of the 2nd legion with some raven guard and night lords elements that either joined them in their exile or were their minders. The fact that their patrols regularly take them through areas of the galaxy where the Rangdan Xenocides occurred leads me to believe that whatever befell their gene father involved the Rangdan.

Another good video nutbugg

I’ve always assumed that fate of the missing legions is simply a nod to the fate of various ancient Roman legions and the lost Standards.

I like to think one of the lost primarchs saw theough the emperor the moment they met. He was just like "no thank you, i have no interest in joining your cult" and the emperor couldnt have that so he got deleted.

In my headcanon, one Primarch fell to Chaos and the other one allied himself with Xenos (Eldar?) to fight and kill his falllen brother and proposing some sort of collaboration or peaceful coexistence with the aliens. The emperor would not have it, eradicated the mislead Primarch and his alien Contraband, covering everything up as the "Rangdan Xenocide", then erased all knowledge of chaos and cooperating with Xenos "to preserve the ideals of the great crusade" (=atheism and extreme xenophobia).

Of note, it is mentioned by some Custodes in the Wolftime that the Eleventh fought the Wolves, BUT that they were unknowingly manipulated into betrayal, but were loyal otherwise. I personally think the Eleventh was puppeteered by Rangdan and died in a mutual kill with the Second. The Legions were mindwiped and spared

I thought I heard somewhere that EARLY early 40k lore had the 2nd as the Rainbow Warriors and 11th and the Invocators or something

There's a "subject 11" within the dark cells, does that has to do with anything?

You know how corax has a warp form now. How hes basically a crow monster that's waiting outside logar's house with a baseball bat? What if one of the lost primarch awakened their warp form waaay too early. It would explain why some of the primarchs would volunteer to have their minds wiped.

great video

I think at least one of the lost Primarchs wasn't erased from history for his own deeds but because what was done to him. What if one of the Primarchs landed in drukhari territory and either became some feared fiend or was turned into a chair.

I loved this breakdown

Dorn told Sigisumun isn't his son, what if he was of the 2nd or 11th legion... imperial fist and ultramarine are said to of had a huge influx of marines before the heresy.. makes you wonder about the soul drinkers as well.

Lion mentions in his book on the primarchs that two false generals were killed in the Ulanor campaign. Later, more came along with the Emperor.

Maybe the 11th did betray the emperor and forced it on his brother the 2nd and it that mutated them both.

imagine if one of these two were in a prison complex over the imperial palace that would be incredibly massive.

The primarchs all had aspects of the emperor's character. You just need to consider what aspects of the emperor's nature that wouldn't be usefull in the great crusade and you've solved the riddle behind the 2 lost primarchs

With Guiliman and the Lion we now got two characters back who know of the lost Legions and their Primarchs fates. Maybe we ll get to know something about that trough them. However, this is unlikely as they got much more important stuff to do than talking about that.

All this info on the lost legion, and the writer in me wants to make something. So here we go Mantiken was to be the 11th primarch of the Emperor, and he was to be the strategist. A cunning intellect and an adaptable mind would be a boon for the future of the Imperium. Unfortunately, when the Warp pulled the primarch capsules and scattered them, Mantiken's was closest to the gate and took the brunt of the corrupting warp. Mantiken landed on a desolate world called Sthenos. A world consistently in conflict and limited on resources. He grew up learning that his body was his best weapon as stone and metal degraded and would eventually fail him. He became a war leader on Sthenos and lead his forces to many victories. In time he attacked an alien adversary he had never seen before. These were monsters with bio-organic weapons, many of which out competed the paltry weapons he had at his disposal. In victory he found an opportunity. The Warp had changed him, and his body was his best weapon. It was time to use them, he had an adaptable mind, and thanks to the Warp, an adaptable body. He began inducing mutations in his own body, often mimicking the xenos that nearly bested his forces. The Emperor was, less then pleased to see his prized strategist intentionally becoming a mutant, but he was the Emperor and Mantiken was a Primarch. The mutations were never labeled as such. They were 'additional biological enhancements' that Mantiken's body could handle. For a time, this was enough. Mantiken took charge of the 11th Astartes and lead them to many victories for the Emperor. Due to the instability of Mantiken's Gene-seed, the 11th Legion never had the numbers of many of the other legions. Behind closed doors though, Mantiken and the Emperor of Mankind argued a good deal, especially on the topic of humans and what constitutes as a mutant. This rift grew when it was brought to the Emperor's attention that members of Mantiken's Astartes were encouraged to develop and grow their own mutations as rank and badges of honor. They were starting to need the Adeptus Mechanicus less and less. In many people's eyes, they were becoming uncontrollable. A new world was discovered, but the Imperium decided that the inhabitants were mutants and not welcome amongst the Empire of Man. As a test of loyalty, and slight discipline, The Emperor sent Mantiken and the 11th to assist in the purging of the world to make it ready for true humans to colonize. After all, who would defy the Emperor? The 11th Astartes under command from their Primarch killed the Imperium forces there and protected the natives. This slight, would not go unanswered Mantiken believed that having a large portion of his Astartes there would deter reckless retaliation. He wanted to believe that he could convince the Emperor that it was wrong to purge them, that they were more useful to the Imperium alive then as target practice. However, the man who was sent to deal with Mantiken did not believe so. An Exterminatus can be called on a planet where the cost of claiming it is higher than the resources there, and battling an entire legion of Astartes? Well, they encouraged mutants, defied the Emperor and 'unjustly' killed many brave men of the Imperium. They were traitors. The planet was reduced to asteroids by intense bombardment. When this agent returned to tell The Emperor the wonderful news that the world was taken care of and the diabolical warp infused traitor was dealt with before he could corrupt any more.... he did not receive the reward he was expecting. The remaining 11th Legion Astartes were called to Holy Terra, where they had their minds wiped and discretely transferred to other Legions with their gene-seeds labeled as 'corrupted' so they would never be used again. To cover up that the Primarchs could be killed, the failings of the agent, and the treason of Mantiken, The Emperor declared all information on the 11th Legion to be redacted and erased from history. Few of the Primarchs remember their brother Mantiken. He was strong, he was able and despite having extremely different views then his brethren, was a Primarch and a good friend to many of his brothers, now lost and purged form history. Thoughts?

Gorka and Morka are two forgotten Primarchs

what if they are deleted from records not because they are failures but represent the emperor failure, who know maybe at least one die before the Emperor find him, maybe they are finded but refuse to join and run away, this will represent that the Emepro fail to find his suns in time, that he failed

The emperor of mankind failed humanity and his sons.

So why don't Chaos forces reveal the history of the lost Primarchs. Just to fuck with the Imperium ?

Soul Drinkers and Sons of Malice. At least in my head canon for the past 25 years or so.

I think that the 2 primarchs either attacked the Emperor or they were possessed in some way

I hope some day GW explores the Rangdan Xenocides in great detail

It says that horus try to say "ma ma malal" to malcador to say his one of his lost brother name, before malcador choke him

I think the purged was the first true betrayal of big e and was systematically killed. The forgotten could be something as simple as the emperor sending him into dark space for a secret mission of some sort and wiped away any records of them, hence the forgotten.

That thumbnail....I cannot see Sanguinius without seeing Alexander Skarsgård now :D

I have wondered what rolls the lost Primearchs would have taken. I think one of them would have taken the roll of Demon Hunters, much like the Grey Knights. While the other would have been a scientist like Belisarius Cawl, Fabius Bile or something like that.

The two missing Primarchs are the Blue Wizards

One of them will be The Legion of the Damned

so im guessing if it isnt alpharius omegon, then it must be the thunder warrior primarch and Leetus the forgetten son

Since the primarchs "mother" separated them from their father to protect them according to some other videos I have seen. Would it make sense if they abandoned the Emperor to join their mother? That would open up a lot of stories.

I personally like to think that x is omegon as it is very much withing the alpha legions desires to keep the idea that there are the twin primarchs a secret hens alpharius being the only primarch that they actually talk about

Isn't it possible that after they got purged, they we're somehow revived by the warp resulting in their deformation, this diformation or curse or whatever you wanna call it being eternal flame resulting in the two Primarch's being primarch's of one single legion known as "Legion of The Damned"? After all it is called "Of The Damned". Just an theory tho i don't know if it's true but it would be crazy

*fully explained* I think not! Anyway, you missed the link between the Primarch lore and Dante's trilogy, with the missing 2 Primarchs being from "Purgatio".

What about specimen 11 being written on a cell door beaneth the imperial palace? A door the Custodes gaurd but have never opened.

This is a good theory. could they be in suspended animation like the primaris marines under belisarius cawl?

interex faction just maybe 1 of the 2 lost primarchs was sent there

What if… one of them was infected by a genestealer? An entire legion carrying the curse of the four-armed emperor might have turned effectively all at once.

I like to think one of the Lost Primarchs was unpersoned because he was sent to an alien world instead of a human one and grew up to care more for his surrogate species then the Imperium of Man and abandoned the Emperor right before the Horus Heresey happened. So there's this successful pocket empire in a forgotten corner of the galaxy lead by a Primarch and his alien wards.

in my headcannon one was born on a pacifist world and did not want to be a general in the crusade and the emperor fearing his sons striving beyond his immediate need decided to snip the alternative in the bud.

In most mythologies there always have an event so big that it nearly wipe out entire human race like Raknarok, Kali Yuga, the fallen sun or the flood, etc. The humans that survive these events, Noah, Modi and Magni etc, will lead humanity to a new age So i guess that will be the roll of at least one of the 2 lost Primarchs, when the final battle of 40k end, the Emperor, the Priamarch, Chaos, Xenos propably will all be dead. And the lost Primarchs will appear to protect and guide what left of humanity to a new age

Someone else suggested (can’t remember who) that the two missing legions are so that the players on either side can invent their own. That’s a possibility. The rainbow legion was in rogue trader and a few indexes. Thus they could be one of the legions. Or, it could be that Omegon had his own legion ?

Son of Malice maybe predecessor of lost primarch

trying to recall my oldmemories. Russ was the "bully" of the emperor. He send the wolfs when want to make public humillationandkeeptheirprimarcsalive. The secretexecutionerof the Emperor was the Lion. Hesend the first legion when want the primarks dead. in fact the lion , in the heresy was the one who tried to execute the "night stalker". The Lion in the one who killed the primarks and keep it quiet as most other secrets for the Emperor. Also the lost leguions where called "the lost and the damned" ans knicknames.

The Emperor created a new space marine and that is the Grey Knights He (The Emperor) replaced maybe the 2nd or the 11th missing space marine.

The average Imperial citizen doesn't know that there were 18-21 Primarchs. They learn from the Ecclesiarchy that the Emperor only had 9 sons. Mainly, it's only the Astartes, the Inquisition, and the High Lords of Terra who know the truth.

What a messy lore over a not so good idea (To have two free spots for the fans to make their own legions 😂). In the Rogue Trade era books I kinda remember that the erasure of the "chapters" was placed or sugested arround the Age of Apostasy and in general I think it made more sense. It was another Empire after all, with the Emperor in the Golden Throne and the Inquisition in place burning books. But with the Horus Heresy novels came all this convoluted mistery 😅

At the beginning of the Heresy they sided with Horus (Codex Uktramarines, 2nd ed.). I like to think that they were in the Webway for all the time, pushing the Emperor's secret project. Funny how the Webway portal came under attack by Horus allies, no? Also, lore tells that most of Horus allies realised their mistakes after his death, and turned on the Chaos worshippers, self exiling themselves knowing there was no redemption nor pardon for them in the Imperium.

i got the impression the emperor killed ther fairie one, and i always forget about the other one

Well it's likely they blocked the memory of the two primarchs because whatever situation that would've caused that was handled/ taken care of. The traitor primarchs were an active issue, wouldn't do much good to wipe people's memory of that until they were all taken care of.

An inherent gene-seed flaw caused the 2nd and 11th legions to be less-than-effective combat units. Less effective than the other legions, anyway. This less-than-effectiveness contributed to most of their numbers, including their primarchs, getting wiped out by the Rangdan. The few survivors were culled by the Space Wolves so their memory could be erased from history, as their flaw made them an embarrassment to the Emperor. The hypothesis about the survivors joining the Ultramarines is dubious at best. Legions come from different planets and have wildly different cultures. Legionnaires from one planet assimilating into a legion from another, while not impossible, is not a thing that would go unnoticed, thus invalidating the whole "erase them from history" thing.

I Believe one was a Primarch Ratling, towering, godlike at almost 6 feet tall! The other a Primarch Jokero constructed a trasdimsional wristwatch from its own fur in under a second disappearing to a pocket dimension inside the Emperors left ear, where it continued the big E’s Webway project.

Damnatio Memoriae. What if the legion of the damned is actually (and not fire hawks) either II or XI It would be extremely hard for the Imperial truth if one of its legions became actual Imperial demons right?

What if.....they are part of fleets that have been postioned outside the galaxys edge in stasis wating to be reactivated at the most dire of need and they happen to be the most powerful chapters the imperium has, and tbey could be waiting for the emperors return from his stasis on the golden throne

What if II and/or XI had something to do with the later T'au?

No data is completely obliterated, just have to know where and dig far enough to find it.

And what if the emperor and the cigilite erased their records but not them because some were sent on a special agenda into the warp??? Something like locating a special place within the warp were the emperor can focus his energy to achieve his real goal that might have been the creation of a new GOD like entity within the warp that will channel the hope of all humanity and face the chaos pantheon directly in their realm... Then the golden throne was just a catalyser build for this secret purpose😏😏😏😏

Im not super knowledgeable of the black library and deeper lore. But, is it possible that the lost legions are the custodes and grey knights respectively?

My running theory is, every primmarch having traits of the emperor one of them was the emperor’s genius for tech He created alot of new tech and worked on genetics during the randang genocide he would be caught modifying not just his legion but even his own generics with part of this alien threat, emps said fuck no and the adeptus also had a pissy fit and shut them down. The purist of the marines where kept and the rest purged and the survivors that where integrated back in would become the minitors The other…. Omegon the “twin” and either the loyal or heretical brother. His legion was sent with him joining alpha and alpha would balance there numbers by sending there troops to the ultramarines pretending to be this missing legion under the emperor’s orders. I mean that explains the shit out of the iron snakes

If their existence was a threat to the great crusade ideals, then it is possible One of two primarchs was alien friendly or at very least neutral and against complaince by extermination or silence chaos with imperial truth at the cost of lying to mankind and treat it as progress of the human spirit. But if the II th and XI th were sent to do randgan xenocides and also 50000 dark angels perished in that conlict the defiance of the great crusade was just below the surface, that was brought about by the conflict. But apparently Ragdan were highly agressive. So this is not the atmosphere in which a goodie alien movement within astartes ranks could have emerged. Perhaps from the start they were or one of them decided not go along with the Emperor, but why was he not handled the same way Angron was?? To many questions with no answers.....or......

Hey, I know you’re voice don’t you have another channel?

Malcador really look like an old Emperor of Mankind

Makes me feel Blood Ravens originate from one of these two.

2nd legion primarch is Bud Spencer. 11th legion Primarch is Terrence Hill. end of discussion.

We always think " Chaos " when we read " Traitor ". But how about this theory : One of the lost Primarch ( pick the one you want ) was send to the universe with the others, but never hit the ground of a planet. But he hit something... A ship. Big, old, forgotten by the rest of the galaxy. A relic of the Dark Age of Technology. Imagine a fleet, dozens, maybe hundreds of ships, coming from the golden age of Humanity. People who seek refuge into the void when the first human empire collapse, just like the aeldari do. With time they formed a nomad nation, half merchants half pirates, always moving into the galaxy. They have very good tech, they understand it, they trade with humans and aliens without distinction. Business is business after all. They have a strong culture of freedom and independance, they never stay in a place for long. They don't have navigators, they hide navigation beacons into the void or on the planet they visit for transactions. Their jumps are shorts, but precise and sure. The kid is adopted by the crew of the ship he hit ( maybe the captain family ) and become part of this people. When the emperor found him and these people, they see the great crusade and the imperium as a threat. The absolute authority of this unique leader, the mandatored " Imperial Compliance " means the end of their culture and their people. Problem : They are pirates sometimes, they can defend themselves, but the imperium is a war machine. Fighting is not an option. So the Primarch send a very clear message : " You are my maker, not my father. These people are my people. We won't submit. Farewell. " And they disapear into the void. Using road known by them only, they disband into smaller fleets, reuniting every two or three centuries in secret places. This is a big slap in the emperor face, and in terms of public relationships, it is a disaster. So they just make it disapear. ( And to be honest, the idea of a Primarch involved in piracy/smuggling/trading with aliens makes me laugh )

Maybe they went Native with the Eldar

and the Legion of the Damned ?

Arent they just placeholder for fan made lore. One "good" and other one "bad"

Sigmar is the 2 primarc he left with the serphon and the old ones and now rules in another realm or galaxy the 11th was a normal person she had no dimgod powers. 😂