As of March 2011 a particular Chaos Space Marine can be seen on the Dark Millennium official website main page.
Khârn the BetrayerEdit
Khârn was first generation Space Marine. He was a member of the Space Marine Chapter the World Eaters. Khârn, like all members of the World Eaters Chapter, had his brain restructured so that he saw pleasure in war and destruction – a reason why the chapter would later come to worship Khorne a god of bloody slaughter. Even before his defection he proved to be a great fighter albeit having a great carnal bloodlust even more prominent than that of his chapter brothers. Because of this he was made captain of the 8th Assault Company of the World Eaters Legion. It was there he met Angron, Primarch of the World Eaters and future Daemon Prince.
The official Dark Millenium official site - the figure can still be seen as of May the 2nd 2011.