Editing MidHammer 40,000 (section)

===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.