User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6050823-20140615152549/@comment-4009941-20140615171005

And here I was thinking White Fatalis was not involved with the other and he actually may be the leader. What if a White Fatalis instigated Scrade Castle's invasion by Black and Crimson Fatalis?. And since he can call the Origin Dragons, he should be able to summon Dire Miralis also. To top this off they like to sit on top of a tower from a civilization that died out from basing their tech on Fatalis and got corrupted(You can find schematics for Fatalis equipment of multiple types in the ruins). So White Fatalis leading Origin Dragons may have been their doom also along with the war that happened.

@MHAdvent Origin Dragons tempt you to do their will as its thoughts mend with yours like Demon Possession. According to what has been given by Capcom so far this includes murder, wanting to kill everything you see(Well thats how I think no one got out of Scrade), Various sins, Apparent control of a body that lasts only a few moments after apparent death or fainting, Likely makes you behave rogue, And I dunno why but some users of Fatalis equipment dissapear unknown where.