A Warp Spider is a tiny, spider-like creatures that live in the Eldar Craftworlds' Infinity Circuits. They are attracted by the presence of negative psychic entities which they swarm and feed upon, much like the white blood cells of a human immune system. When there is no danger to the Craftworld of psychic infection, they roam the Infinity Circuit forming nests and searching for fragments of bad memories to feed upon.The Warp Spiders Aspect Warriors are named after them in honour of their role defending the Craftworlds. Because of their protective abilities, they are also known to the Eldar as "White Guardians."