Originally the Emperor created His 20 sons, but then Chaos came for them. After the events of the Horus Heresy and 10,000 years, where are they now?
Via our friends at Lexicanum
Fate of the Primarchs
Traitors
- Warmaster Horus was killed by the Emperor of Mankind, and his soul was obliterated. His corpse was completely destroyed by Abaddon the Despoiler, who also took over his place as overall leader of the Chaos Space Marines.
- Magnus rose to the rank of Daemon Prince of Tzeentch.
- Angron rose to the rank of Daemon prince of Khorne.
- Mortarion rose the rank of Daemon Prince of Nurgle.
- Fulgrim rose to the rank of Daemon Prince of Slaanesh.
- Lorgar rose to the rank of Daemon Prince of Chaos Undivided.
- Perturabo rose to the rank of Daemon Prince of Chaos Undivided.
- Konrad Curze, aka Night Haunter, was assassinated by Callidus assassin M’Shen. He allowed her infiltration, apparently wanting to die.
- Alpharius was killed by Roboute Guilliman, thus leaving Omegon alive. But the source which reported his death may have been manipulated. It is not known if Alpharius or Omegon is the Primarch killed in the report. Due to the report’s unreliability, neither may have been killed.
Loyalists
- Ferrus Manus was killed at the Drop Site massacre at the start of the Horus Heresy by Fulgrim who presented his head to Horus.
- Sanguinius was slain by Horus after refusing to join him during the Battle of Terra.
- Lion El’Jonson returned to his homeworld of Caliban only to discover that his friend and second-in command Luther and the Dark Angel garrison had turned against him. He led a strike force of his own loyal Dark Angels against the traitors. He disappeared in the resulting inferno as the world was blasted apart by a Warp Storm and a bombardment from his ships in orbit. He sleeps deep within the Rock, the biggest piece of Caliban and current home base of the Dark Angels. Only the Emperor and the Watchers in the Dark know of this secret.
- Jaghatai Khan disappeared while pursuing the Dark Eldar into a Webway portal after they had managed to raid Mundus Planus. There are rumours that he fights there still, lost in the twisting paths of theWebway. After nine thousand years it seems highly unlikely, but not impossible.
- Leman Russ disappeared in the Eye of Terror. The Space Wolves hold a legend that says Russ went on a quest to find a means to cure the Emperor. His final words before his disappearance is that he would return for the ‘Wolftime’ (the final battle). It is also said that Leman Russ led the 13th Company into the Eye of Terror and ordered them to hunt down the Traitor Legions which had fled to the Eye of Terror, particularly the Thousand Sons.
- Rogal Dorn boarded a Chaos cruiser during a Black Crusade alongside a company of his sons and died fighting. Today, his hand is housed in the holiest shrine of the Imperial Fists chapter, and his dead body encased in amber and put in Phalanx .
- Roboute Guilliman was struck down with an envenomed blade by his former brother Fulgrim. His body is perfectly preserved in a stasis field at the heart of the Temple of Correction. It is rumoured that he is still alive and that his wound is slowly healing, something normally impossible in a stasis field. The truth of this rumour is unknown but this is seen by many (including Captain Uriel Ventris) as mere optimistic thinking.
- Vulkan disappeared. The position of Chapter Master, filled by the Captain of the First Company, is considered to be a regency as the Salamanders believe that Vulkan will one day return and lead them on a great crusade against Chaos.
- Corax was racked by guilt and shame. In order to rebuild quickly the strength of his legion from the dropsite massacre on Isstvan V, Corax accelerated the growth of the gene-seed organs, producing moreSpace Marines, but this process also deteriorated the Gene-seed, causing many to become hulking monsters. Riddled with guilt over what he had done, Corax administered euthanasia to all of them and then locked himself away within his sanctum, the Raven’s Tower. Exactly one year later he left his tower, haggard and gaunt, and took a small shuttle craft with the words Never more. It was last monitored setting a course for the Eye of Terror.
Two Unknown Primarchs
Almost nothing is known about the two unknown primarchs.
Clones
There have been several instances of cloned Primarchs, the result being a mentally unstable, confused, and sometimes deformed creature. The first cloned primarch was Ferrus Manus, created by Fabius Bile at the demand of a mad Fulgrim. Fulgrim attempted to again convert Ferrus to his cause before killing him once more, a process that was repeated multiple times with new clones.
Perhaps the most notable example of a cloned Primarch was after the Horus Heresy, where Fabius Bile again cloned a son of the Emperor, this time Horus from DNA provided by the Warmaster‘s corpse. Confused and senile, this clone of Horus didn’t initially recognize many of his closest comrades such as Ezekyle Abaddon and proved a poor imitation of the real Lupercal. Abaddon killed the clone, and in its dying moments it recognized who the First Captain was. During the same period, Bile attempted to clone all twenty Primarch’s from gathered samples, the result being a hall of pods with monstrosities and deformed adolescent creatures. All of these abominations were killed by Abaddon and his forces.
The Necron Mystery
Then there is the this description of one of the artifacts of Trazyn the Infinite’s collection, commonly believed to indicate that one of the “missing” primarchs is in possession of the Necron master collector:
“a giant of a man clad in baroque power armour, his face contorted in a permanent scream”