Board Thread:Warhammer 40k Roleplay/@comment-5578642-20121004225641/@comment-5131965-20121017071711

yeah supa, i have to agree with you, Tyanids will eat their allies, not fight alongside them.

Necrons are neither able to touch chaos, become corrupted or be possessed by Chaos as they have no Souls, and are thus nulls (pharia's are null's but they are in the minus zone) to the immaterium. Necrons also abhore mutation as it reminises their ancient bodies, which corrupted easily (far more than humans). they are a force of order; and have been known to ally with the Imperium, but never Chaos, or the Eldar.

no form of Eldar will ever assist Chaos, as the Dark Eldar fear 'she who thirsts', and the Eldar are to pompous.

Orks are uncorrutable for some reason; but are two stubborn to normally ally with other races, they find it difficult enough to ally with other orks, let alone other species. and even if they do get obbsessed with waaaaaaaaugh, they abhore Khorne, as he is not green enough, Gork on the other hand...

Orks also are not smart enough to be tempted by Chaos; and even if they do like smashing aside civilisation, they do not destroy for some great entity like Chaos (chaos gods) and Tyranids (Hive Mind); they destroy for the joy of it.