From birth, Haruo possessed unusually powerful muscles. At the age of 15, he was renowned as the strongest man in his village. In fact, he once defeated an opponent who was eating a bear with nothing but his bare hands. He was later adopted by Kono Akio. Upon arriving in Japan, Haruo became engrossed in food and games, leading him to become quite angry. As a result, he smashed numerous game consoles and controllers. Following his defeat at the hands of Akoya Seishu, Haruo encountered Sekibayashi Jun and underwent a transformation. He eventually pursued a career as a professional wrestler.