Editing Rogal Dorn (section)

==Soul Drinkers and other Adopted Marines==

It is revealed during the Heresy that Dorn and Guilliman came up with the idea to mind-wipe everyone who had interacted with the Two Missing Primarchs (including themselves!) and further argued that the legions shouldn't be purged along with their gene-fathers, which the Emperor and Malcador agreed with. It is generally taken as fact by many that the Imperial Fists and Ultramarines then absorbed the Marines from the II and XI, based on some lines of dialogue from ''The First Heretic'' and ''The Chamber at the End of Memory''. That said, despite it being "common knowledge", it's never been confirmed that this is what happened. At least one IF successor chapter, the [[Soul Drinkers]], was later discovered to not possess Dorn's gene-seed, but their actual origins remain unclear.