The Aeldari are a fictional race in the Warhammer 40,000 universe, known for their advanced technology and psychic abilities. They are often depicted as a highly sophisticated and ancient civilization, with a rich history that includes the fall of their empire due to the emergence of the Chaos god Slaanesh. Aeldari society is divided into several factions, including the Craftworlds, which are massive, spaceship-like habitats, and the Drukhari, who are known for their dark and sadistic practices. They are characterized by their slender physiques, elegant designs, and a deep connection to the Warp, the psychic dimension that influences their powers.