Quetzalcoatl, often referred to as Lucoa, is a supporting character of Kobayashi-san Chi no Maid Dragon and the titular protagonist of the spin-off Kobayashi-san-chi no Maid Dragon: Lucoa wa Boku no xx Desu. She is a former dragon goddess and an old friend of Tohru who was exiled from her seat of goddess after consuming some cursed liquor that led her to enter into a scandalous affair.