Chaos Space Marines
Chaos Space Marines are arguably (very) the main antagonists in the Warhammer 40K universe. Basically Space Marines who have channeled their Faith in the Emperor to something more worthy of worship, like say, a Chaos God. The majority of them are the 10,000+ year old Veterans who stood by the Emperor during the formation of the Imperium. Now, they want nothing more than to tear it down. Why? For the lulz, of course, particularly due to the fact that a great deal of them can't even remember why they rebelled in the first place.
Seeing as how they're basically very experienced and potent Veteran marines further enhanced by the Powers of Chaos, Chaos Space Marines are generally stronger combatants than their loyalist brethren. Basically they exist to show that Space Marines aren't complete Mary Sues.
Overview
Basically SPESS MEHREENS who, for whatever non-reason, decided they were too cool and edgy for the Imperium of Man, so they redirected their homolust for the Emprah to something else...like a Chaos god. During the height of the Horus Heresy, they went all evil and did a lot of nasty on their former comrades until they were forced to retreat to the Eye of Terror due to Smurfs. Who were not on the other side of the galaxy when this occurs., disregard that, the Smurfs didn't even participate in the defense of Terra.
Naturally, they fight just like Space Marines, except on the average, stronger, more experienced and older, given that the majority stood with their Primarchs during the Great Crusade. They keep using shit they were equipped with prior to the Horus Heresy such as bolters and the ever useful Space Marine plot armor, which would explain why they haven't fist fucked each other to death before reaching the Eye of Terror or why they would follow the lead of a particular Saturday morning cartoon villain. Chaos Marines are also commonly known to compensate their aging weapons (which didn't really age much considering how fucktarded Imperium tech support is) by using demon magic, giving themselves penis fingers for that extra edge in combat. (Daemon steroids for Khorne's followers, for example )
They're the oldest fogies in the setting, barring the homosexual faggots and the Emo Tomb King expys. Because of this, they irritably refer to the Loyalists as "Pups", "An army of Children" and "Those FUCKING whippersnappers." Frequently mocking their methods of Warfare as un-manly, and shouting such phrases as "THIS IS HOW WE DID IT MY DAY!!".
The Traitor Legions
When the Horus Heresy struck, nine of the original twenty legions turned against the Emprah and most of them devoted themselves to a particular Chaos God or devoted themselves to Chaos itself. The list of the 9 legions:
- Emperor's Children: Fulgrim
- Iron Warriors: Perturabo
- Night Lords: Konrad Curze/Night Haunter
- World Eaters: Angron- dissolved after Kharn turned the legion against themselves, what a guy. Now acting as roaming warbands and mercenaries.
- Death Guard: Mortarion
- Thousand Sons: Magnus the Red
- Sons of Horus/Black Legion: Horus
- Word Bearers: Lorgar
Alpha Legion: Alpharius/Omegon- No such legion or primarchs exists , further speculation on this issue is heresy and will result in execution. *BLAM*
Gallery
<gallery> File:1227181112539.jpg|The Typical Chaos Space Marine File:1174923365695wq1vj1.png|The dreaded Night Lords preparing an ambush File:Emperor s Children by megalaros.jpg