Ragyō Kiryūin (鬼龍院 羅暁 Kiryūin Ragyō) is the true main antagonist of Kill la Kill. She's the mother of Ryuko Matoi and Satsuki Kiryuin. Ragyo is well known for her cruelty and heartlessness throughout the series. Willing to kill, torture and abuse anyone including her own children in order to achieve her goals, or simply because she feels like it. She works together with the Life Fibers in their ambition to end all life on Earth.