A "Chaos God" refers to a powerful entity in the fictional universe of Warhammer 40,000, representing the forces of chaos and disorder. There are four primary Chaos Gods: Khorne, Tzeentch, Nurgle, and Slaanesh, each embodying different aspects of chaos, such as war, change, decay, and excess, respectively. These gods influence the material world through their followers and the psychic energy generated by emotions and actions. In the lore of Warhammer 40,000, Chaos Gods exist in the Warp, a parallel dimension that reflects the chaotic nature of their essence. They are often depicted as malevolent beings that seek to corrupt and dominate the universe, leading to conflict and suffering. Their followers, known as Chaos Space Marines or Cultists, serve their will, spreading chaos and destruction across the galaxy.