Heretic Astartes, a dark reflection of the Imperial Space Marines, are the remnants of forces that have teamed up with Warmaster during Horus's heresy, mixed with more modern renegades. The millennia of life in warp have twisted them and succeeded in the dark power they use to retaliate against their enemies. Lord Discordant leads the Hellforged Warband from the back of the mighty Helstalker and commands the arachnoid Venomcrawler, the two Obliterators who transform themselves to flesh out a series of heavy weapons, and five Havocs aiming at their enemies with powerful weapons.