The Emperor's Children are a faction in the Warhammer 40,000 universe, originally part of the Imperial Space Marines. They were known for their pursuit of perfection and excellence in battle, embodying the ideals of their primarch, Fulgrim. However, they eventually fell to the corrupting influence of Chaos, specifically the Chaos God Slaanesh, leading to their transformation into a force of decadence and excess. As a result of their corruption, the Emperor's Children became notorious for their hedonistic practices and obsession with sensory experiences. They are often depicted as skilled warriors, using advanced technology and psychic abilities in combat. Their once-noble aspirations have turned into a quest for pleasure and excess, making them a unique and dangerous faction within the Warhammer 40,000 lore.