Having waged a long shadow war against the Imperium for more than 10 millennia, the Heretic Astartes are perfectly suited to covert war. Like the loyalist brothers they betrayed so long ago, each Chaos Space Marine is a transhuman giant genetically engineered for warfare. Yet that is where the similarities end, for they have been twisted and corrupted by their all-consuming hatred of Mankind and irrevocably tainted by the power of the warp. Heretic Astartes kill teams vary enormously, dependent upon which Traitor Legion or Renegade Chapter they hail from, and which god or gods they worship. Some are small, elite groups of killers, while others include throngs of chanting cultists amongst their ranks.