User blog comment:Legionaire22/AT Chaos Vote/@comment-1932673-20111021195609/@comment-1932673-20111021202648

Followers of Chaos respect only strength and Primarchs are the strongest 'mortals' in existence. I doubt that a group of champions would be enough to give the unity that this timeline requires, even Horus couldn't prevent fights from breaking out amongst his fellow primarchs. I suggest that a chaos entity is fused with Gulliman's soul, such like as what occurs during posession. This entity could be somehow linked to the forge of souls and therefore be undivided the resultant recombined entity then inhabits Gulliman's body, so he effectively 'shares' it with his literal 'other halve' this is a very characterful compramise.