Editing MidHammer 40,000 (section)

==Traitors==
===Perturabo===
Slaaneshi. His natural perfectionism developed into obsession and Slaanesh worship. Essentially replaces Fulgrim and the Emperor's Children as the Slaaneshi Legion.

Even better: TZEENTCH. Pride, envy and the coveting of another's station? Scheming to get around his lack of actual architectural talent? It's perfect for Perturabo. While the other Traitor Primarchs organize against the Imperium at large, Perturabo's actions are done in very particular spite and hatred of his brothers on a personal level. Perturabo has become infamous for his nasty quips and insults, earning him the title Perturabo the Razortongue. His Iron Warriors' minds are gradually being ground up and forgotten, replaced with single-minded bile-spewing hatred of the enemy, and many have begun devolving into Tzeentchian Chaos Spawns, slinging Warpish fireballs and teleporting through fortifications, still able to muster insults, though the mind behind them is all but gone.

===Konrad Curze===
Khorne and Slaanesh. Curze went truly mad by the end of the Letdown, and declared himself the new “god of justice”, sending his Legion on a crusade of terror across the galaxy. This caused the “years of fear” in the wider Imperium, where sectors were cut off and entire planets went mad from fear, often tearing into one another and collapsing into anarchy simply from the threats of the Night Lords, but the more space the Legion took the more fractured they became, and eventually from a combined assault by Horus, Magnus, and Perturabo(?) on the world of Contranis they were able to fight off the mad Primarch, and his Legion was shattered, never for the pieces to be put back together.

Another possibility is that Curze's sense of justice was warped by Khorne's influence until Curze went from vindictive but at least understandable acts of vigilante-grade justice to unabashed and unrelentingly vicious tyranny, unable to see reason anymore as his Legion descended into downright barbaric brutality. At the climax of the Letdown, Curze received a hellish beating from Lion El'Johnson, who was absolutely furious at his brother's vile, pitiful cruelty, and Curze abandoned his Legion as he fled for the Eye Of Terror, with the other Traitor Primarchs not far behind. Leaderless and mostly annihilated on Terra, the Night Lords Legion split down the middle into dozens of bands of Khorne-worshipping Punisher-type monsters and Slaaneshi torture-freaks savouring the terror and agony of mortals, losing the sense of right entirely. Curze is said to still be watching for the Lion to this day, fleeing mindlessly like an abused animal. Curze's actual fate is unknown even to the other Traitor Primarchs.

===Angron===
Khorne. Unchanged? Maybe we could do something fun with the Butcher’s Nails.

Without going into much detail, Angron has been very antisocial since the Letdown (shocker!) and has largely kept to himself in his little scarred corner of the Eye Of Terror, only ever so much as speaking to Lorgar, and only coming out when it is time to put the boots to the Imperium and take another shot at the God-Emperor and His lapdogs. Lot of pent-up rage in there, but rather than violence for violence's sake or self-indulgent domination, Angron seems to be trying to ''meditate'' in between Black Crusades, perhaps trying to overcome the Butcher's Nails on his own. Regardless of this apparent introspective, uncharacteristically calm behaviour, Angron is still very much one of Khorne's favourite wind-up toys, and his World Eaters are all-too eager to pillage, burn and butcher under the commands of the other traitor Primarchs.

===Mortarion===
Nurgle. Any ideas? Don’t have much.
<!---Considering that Papa N's specialty is endurance, maybe the Imperial Fists could become the Nurglite Legion, and the Death Guard become the Emprah's Reapers, silencing the worlds Sanguinius and Vulkan fail to placate.--->

Here's a yarn for you;
Mortarion's resentment of Father for having stolen his kill and trivializing his entire lifetime's worth of struggles up to that point festered and churned inside him for centuries during the course of the Great Crusade, which he and his Legion took a backseat for. When Lorgar started the heresy as a political revolt against Big E's deception of the populace and indeed His own sons, and overall hypocrisy all across the board, and just generally being a glimmering not-God jackass, Mortarion was on board right from the start, and allowed Lorgar's new sorcerers (led by that turd, Erebus) to infest his Death Guard with Chaos energies for the upcoming attempt at a Drop Site Massacre, and the Death Guard marines marched against the loyalist marines on the fields of Istvaan V in a gruesome display, spraying chemical weapons that corroded armour and set Astartes flesh ablaze with pustules and boils. The Death Guard marched even as their own bodies were torn apart, first by Bolter fusillades and soon, most disruptively for the loyalists to observe, by Nurgle mutations which split their rusting armour open like dead fruit skins and set their modified organs out in sagging lumps from gouges in their flesh. The fall of the Death Guard is marked as one of the most frightening and eye-opening parts of the Drop Site Massacre, as it revealed the new and dangerous threat of Chaos to the marines present. It wasn't just Daemons from a strange parallel dimension; it was the corruption of one's own body and mind.

Despite Mortarion's best efforts to coordinate the Siege Of Terra, the rapid splintering of their forces against the overwhelming defense saw the siege ultimately fail, though not before Lorgar fought the Emperor in single combat and reaped a mighty wound upon their Father. After Lorgar's descent into Chaos proper after they had retreated to the Eye Of Terror, Mortarion became Lorgar's right-hand man for all matters, sharing his preachy brother's seething hatred for the now "divine" God-Emperor. Mortarion is Lorgar's tactician and chief enforcer.

===Lorgar===
Chaos Undivided. Arch-Traitor. What does he do different form Horus as Heresiarch? Less Primarch, but zeal gives him more Daemons, allowing him to pull off the Drop Site Massacre, but this doesn't compensate for the legions that didn't flip, which is why the Lorgar Letdown lost far more decisively than the Horus Heresy.

Here's an idea. While his original Letdown was for the most part a political revolt because of the abuse he suffered at the hands of Father, bolstered by the other traitors who each had their own petty reasons for lashing out, in the aftermath the Emperor, in his extremely weak and almost nonverbal state, did council with his sons and the High Lords of Terra, whereupon they miraculously convinced him that for the good of the Imperium, the Imperial Cult should be allowed to form (though certainly not allowed to run rampant and take control) in order to give the massive populace of the Imperium a solid hope that things were not going to get worse, and that the God-Emperor would be there for them as the pinnacle of Man with His holy sons, the Primarchs, acting in His stead as He recovered from the attack of the unholy enemies of Man...

As he and the traitors fled to the Eye Of Terror, the bickering already starting and Erebus snarling like the nasty little rodent he is, Lorgar felt strength leave him and he looked back at the brothers he was leaving behind and the Father he had only ever wanted the love of, and saw the two-faced old coot ''ACCEPTING'' a religion surrounding himself now. Lorgar is said to have descended into a despairing, wailing fit, clawing at his own face as outrage and misery overcame him, and his bare head still retains the ugly gouge scars from his own fingers raking across his scalp to this day. He "recovered" from this epic emotional breakdown as the heretical traitors vanished into the Eye Of Terror, and soon re-emerged from the care of his Word Bearers a stoic, dedicated, ''angry'' man absolutely hellbent on preaching the glory and destined power of the "better" Gods, the Chaos Gods, in utter spite of the Emperor's failures, cruelties and overall hypocrisy.

Lorgar has lost absolutely all faith in his Father and is just as incensed at his Loyalist brothers for being somehow allowed to suggest that the Emperor was divine while Lorgar himself was punished for it. The Corpse-Emperor's precious Imperium Of Man will be consumed by Chaos, and Lorgar will be there to watch Father's hope die.

===Alpharius & Omegon===
Tzeentch. The mustache-twirling, cat-petting “I’ve been expecting you”-ing villains of 40k. Guide WAAAAAGHS! to poorly defended yet important worlds, triggering uprisings in previously thoroughly loyal sectors, generally creating copious amounts of JUST AS PLANNED. May or may not have triggered the Dark Angels’ schism. Masquerading as Loyalist. Did they have a hand in the creation of the Tau as an annoyance to the IoM?

Alternatively, Alpharius Omegon is looked upon with scorn and mockery by the other traitor Primarchs for supposed weakness, having contributed the least during the Lorgar Letdown. He, or they, are enigmatic and cagey, withholding information from the other traitors constantly, and while the traitor Primarchs admit that they have some trouble getting along these days, they at least TRY to work together under Lorgar to make the Black Crusades mean something. The Alpha Legion don't seem to be trying at all, and it's as though Alpharius Omegon has his, or their, own plans independent from the Chaos Legions, an idea which does not sit well with the traitor Primarchs or their Legions. As in OH, nobody is entirely sure whose side the Alpha Legion is on, or if they're on anybody's side at all. While they haven't been exactly caught sabotaging Chaos, Konrad Curze (or Mortarion, if we go the "Curze went fucking insane" route) feels it is only a matter of time before the truth comes out, bloody and screaming and preferably originating from Alpharius' and/or Omegon's jugular.