Alternate Heresy
The Horus Heresy is one of the biggest events in the Warhammer 40,000 story. Naturally, people like dreaming up alternate scenarios. Page still being expanded.
The Dornian Heresy
- Premise
- What events would cause the presently-loyal Space Marine Legions to have fallen to Chaos, and kept the present Chaos Space Marines loyal to the Imperium?
Exposition here.
In the end, the Space Wolves fell to Khorne, the Blood Angels fell to Nurgle, the White Scars fell to Slaanesh, the Raven Guard fell to Tzeentch, the Salamanders fell to Malal, while Rogal Dorn himself was the arch-traitor, with his Imperial Fists supporting Chaos Undivided (renaming themselves the Black Legion after the failure of the Heresy). The Ultramarines did not fall to Chaos, but seceded from the Imperium and took much of the Ultima Segmentum with them, exemplifying progress and fighting off the Tau. The Iron Hands seem to have gotten mixed up with the Necrons, while the Fallen Angels won out over the loyalist Dark Angels.
On the Imperial side, the Word Bearers became the Ecclesiarchy, the Iron Warriors remained siege masters, the Sons of Horus became the crusading Black Templars, the Emperor's Children remained exemplary perfectionists, the Thousand Sons became blind psychic warriors (see: Grey Knights), the Death Guard became the core of the Inquisition, the World Eaters became serious instead of angry, the Night Lords were loyal Scary Marines, and the Alpha Legion were just as sneaky and just as anti-Ultramarine but still loyal.
It's pretty awesome...except that the Sisters of Battle never existed, because they were wiped out by the Word Bearers when they were still the Brides of the Emperor. Nicely done, Bolter & Chainsword.
The Imperial Heresy
- Premise
- The God-Emperor of Mankind decided "if you can't beat 'em, join 'em" and sided with the Gods of Chaos.
Source Here: http://suptg.thisisnotatrueending.com/archive/16830576/