Loyalist Marine- Traitor Geneseed.
Ok so I am reading the new Salamanders book and the Marines Malevolant have made an appearance and reading them I keep thinking of the pre-heresy World Eater Captain (Badass) Skraal from the Horus Heresy Battle of the Abyss novel.
So I'm wondering could the Marines Malevolant be a second founding chapter that used World Eaters Gene Seed that the Imperium had stockpiled somewhere? I know this was hinted at with the Blood Ravens, but how likely is it do we think?
I have to admit I would love it if the MM and other chapters were based on World Eaters gene seed since that was the Legion I really wish hadn't turned traitor, since they turned to chaos they've become a little bit... sissy.