Saburo Ryū (三郎リュウ, Saburō Ryū) is an incredibly old and powerful self-made Arrancar, whose powers where boosted by the effects of Averian's own power; which inspired Saburo to serve him. Following Averian's death at Kusaka Kori's hands however, he has since taken control of Averian's Army, and is intent on destroying the Ryū Order in retribution. He controls the entirety of the Forest of Menos.