[quote=thewizardguy]
The Chaos Gods in the Warhammer universe are, according to the lore, formed from the thoughts and nightmares of all sentient beings, brought into the warp and formed into reality by the advent of psykers. I think a more accurate comparison would be the Ctan Gods, who came into existence during the Big Bang, and thus existed LONG before the Chaos Gods did.
[/quote]

Good point. It's because of those guys that the Necrons exist. Or a lot of things, really.