Khârn the Betrayer is a member of the World Eaters Traitor Legion of Chaos Space Marines, and the greatest mortal Champion of Khorne. He currently leads his own World Eaters warband called the Butcherhorde.

Second only to the World Eaters Daemon Primarch Angron in aggression and bloodlust, Khârn has lived a life of murder and betrayal, the blood spilt and skulls collected for his patron beyond counting. In battle Khârn is always where the fighting is at its thickest, wielding his heavy Chainaxe Gorechild (which, along with its twin Gorefather, was wielded by Angron during the Horus Heresy). Rimmed with the unbreakable teeth of a Mica Dragon, this fell weapon continually rises and falls as it severs heads and claims skulls. He is the avatar of Khorne, embodying the Blood God's indiscriminate rage and bloodlust in the realm of mortals.