In the Warhammer 40k narrative, Tzeentch Chaos Marines, part of the Traitor Legions and Renegade warbands, aim to overthrow the Emperor of Mankind and take over the Imperium of Man for Chaos. They embody the corrupted Astartes' new allegiance, fighting for power, pleasure, wealth, and mayhem, which were once forbidden to them as the Emperor's ascetic servants and Mankind's selfless guardians.