Mō Kaiō is a martial artist bearing the prestigious title of Kaiō, signifying mastery of Chinese martial arts as conferred by the Chinese Martial Arts Association or an incumbent Kaiō. He shares this honor with contemporaries, though the total number of active Kaiō fluctuates over time. Physically, Mō stands taller than average with a solid build and a noticeably larger facial structure. His eyes are frequently depicted closed. He favors simple attire: a black shirt, black pants, martial arts slippers, and a cap. Selected as one of thirteen Kaiō representatives for the prestigious Raitai Tournament, his scheduled first-round opponent was Kaiō Han. This match faced abrupt cancellation when Kaiō Kaku, the supreme grandmaster of Chinese Kung Fu, altered the tournament rules due to dissatisfaction with the Chinese team's strength. Expressing concern over this decision, Mō directly questioned Kaku. In response, Kaku incapacitated him, removing Mō from the tournament without allowing him to compete, implying a perceived deficiency in Mō's capabilities relative to other participants. Formally trained in Chinese Kenpō consistent with his Kaiō status, Mō never demonstrates his combat skills within documented events. His removal by Kaku before any match further suggests his perceived strength fell short of the grandmaster's expectations for the revised tournament. Personality-wise, Mō exhibits pride in his martial status and national identity, reacting with immediate concern to the revocation of his tournament opportunity. Concurrently, he displays naivety, failing to recognize Kaku's critical assessment of his abilities prior to being incapacitated. His sole documented relationship to Kaiō Kaku is defined by the grandmaster's dismissive action during the tournament incident.