User blog comment:Supahbadmarine/Xeno Ideas/@comment-2253300-20110518200421/@comment-10514705-20110518220114

I still think that the C'tan would be the best fit for the power vacuum which is filled by chaos in our Galaxy. They could arise at a similar time to the Chaos Gods in our Galaxy, meaning that they are at a similar level of power to the C'tan who roamed the Milky Way at the time of the War in Heaven. I also think that Chaos should be a rather underplayed and minor force in Andromeda with Psykers being quite a rarity.