Debo Royaroya (デーボ・ローヤローヤ Dēbo Rōyarōya) is a Debo Monster themed after a prison. Debo Royaroya was created to serve Dogold in making humans angry. Able to use his Chain Roya to capture humans, Royaroya targets martial artists and athletes before targeting the Rippukan family. He later managed to capture Souji's father, with King following suit, but both were free from their containment thanks to a resolved Souji.