Or they may have beaten the Emperor in ritual combat, so sooner or later they would have said 'why are we taking orders from him' It does seem though that one was loyal, but must have had differences of some description, possibly mutations.
Magnus always saw himself as loyal, even allowing the wolves to make planet fall relatively unopposed.
I remember reading that alien dna was used in the construction of the Primarchs, Ork dna would be an obvious option, given that it was designed to create a warrior cast, and was already engineered. Could one of them sided with the Orks (possibly being part of the Ork Psychic presence. Maybe he wanted to bring all the Orks under his and the emperors banner, but the Emperor knew that at the end of the Great Crusade there wouldn't have been a place for the Ork race. Space Marines could change from being warriors (with difficulty, but they could), Orks could not, because of the psychic link
|