A Daemon Prince is one of the most powerful Chaos units. They are people who have promised themselves to Chaos and committed great deeds in the name of their God. Daemon Princeship is a reward as the mortal has the power of chaos infused into them. A Daemon Prince can wield supernatural powers associated with their patron god. After the Horus Heresy, those Space Marine legions that turned traitor fled to the Eye of Terror or other warp regions. They were each promoted to Daemon Prince status for their belief in the power of Chaos and their hatred for the Imperium.