Slaanesh , also known as the " Dark Prince ," the " Prince of Pleasure ," the " Lord of Excess ," the " Perfect Prince ," and the " Prince of Chaos " in the Imperium of Man and " She Who Thirsts " among the Aeldari, is the Chaos God of pleasure, pain, hedonism, excess, perfection and decadence. Lust, pride and self-indulgence are the hallmarks of all who follow it. Most of all lust and hedonism.