Chaos Legions

Chaos, entitled "The Primordial Truth" by its servants and known to the Imperium as the "Archenemy," is an invisible, psychic power embodied by wicked entities constructed from feelings that originate in the Immaterium. Daemons embody Chaos, and there are also mortals who act in its name, such as Cultists, Traitoris Militarum, nobles, leaders, Chaos Space Marines, Hereteks, Traitor Titan Legions, and Chaos Knights of the Dark Mechanicum.

Ranked amongst the mightiest Chaos Gods stand Khorne, embodiment of war and anger, Nurgle, lord of contagion and despondency, Tzeentch, sovereign of sorcery and mutation, and Slaanesh, patron of pleasure and gluttony.