Kaiou Jo is a character from the Baki series, a martial artist from China who holds the esteemed title of Kaiou, a rank reserved for the greatest Chinese Kenpo masters under Grandmaster Kaiou Kaku. He is characterized primarily by his immense physical stature, being notably tall and large, which grants him significant natural strength in combat.

In terms of personality and conduct, the available information is limited, but Jo demonstrates a high level of resilience and pain tolerance. His fighting style is rooted in Chinese Kenpo, and his role within the story is that of a powerful, established martial artist who participates in major tournaments. His key relationship is his subordination to Kaiou Kaku, the overarching grandmaster of Chinese martial arts in the series.

Jo’s role in the narrative is demonstrated through a pivotal match against the boxer Mohammad Alai Jr. Despite his physical advantages and title, he is unable to land a single strike on his opponent. His primary notable ability, beyond his raw physical power, is his extraordinary fortitude. Even after receiving a crushing low blow from Alai Jr, Jo was able to rise and continue fighting for a short time, an act that underscores his exceptional threshold for pain and his refusal to be easily defeated.