Well lore if you want to take it from the tons of books black library puts out, i been reading most of them
Actually there technically is no "good guys" in the 40k universe Imperium just wants to do what humans to best and rape everything until the juice is out Chaos are just a buncha sick Muthafuckas who worship a fat man, a butthurt satan, a cheeky bird-crab-horse-whatever, and a crack headed bimbo with insane amounts of daemon bitches Tau are basically space communists but more in a japenese way (look at their friggin swords and their voices...) We already know what happened to the eldar... Tyranids are just a buncha fat lards that eat all day then move on to eat moar Dark eldar are also just a buncha bimbos who go around getting MASSIVE boners from misery and orks are orks. And dont get me started on the sisters of battle and their "holy crap" and their spiked ditties, I MEAN LOOK AT DOSE TITS MAN! THEY WERE SPECIFICALLY DESIGNED FOR NO TOUCHIES! (The imperium has some crafty smithing if I say so myself) But it is good that you have sided with chaos and not the rotting corpse of the so called "Emprah ef munkoind" Welcome to the forums!
Chaos oddly enough is the lesser of two evils =) and if you looks up the first four chaos gods...oddly enough their names are very remarkable similar to the chaos gods name....ill let you look that up and tease your brain...but here is some of a clue. they used to be human, they used to be astronauts and explorers..they are the first ones to explore chaos and the "HEAVEN LIKE REALM" in the realm of chaos...the demons look like angles and once crossing into the real space...it some how effects them soiling them. i cant remember what book its out of but its very hard to find. all i can remember is their names sounding or looking JUST like the gods of chaos, there was 3 men and 1 women i think. its gotten fuzzy with that part.
Maybe in warhammer fantasy, but in warhammer 40k they brought him back as Malice. See for yourself. http://wh40k.lexicanum.com/wiki/Malice_(Chaos_God)#.Ur4VavRDv_E http://wh40k.lexicanum.com/wiki/Sons_of_Malice#.Ur4VfPRDv_E
