The Thirteen Knights of the Roman Catholic Church (ローマ正教十三騎士団 Rōma Seikyō Jūsan Kishidan?, lit. Roman Orthodox Thirteen Knights Group) is a group of warriors created by and serve under the Roman Catholic Church. According to Stiyl Magnus, the Thirteen Knights are simply a poor imitation of the Knights of England. Their primary purpose appears to be hunting down and eliminating threats and rogue magicians, like Aureolus Izzard.