Muhammad Hussain Inoki was a Japanese professional wrestler, martial artist, politician, and promoter of professional wrestling and mixed martial arts. He was best known by the ring name Antonio Inoki , a homage to fellow professional wrestler Antonino Rocca. Inoki was a twelve-time professional wrestling world champion, notably being the first IWGP Heavyweight Champion and the first Asian WWF Heavyweight Champion – a reign not officially recognized by WWE.

Mitsuhiro Momota , better known as Rikidōzan (力道山), was a Korean-born Japanese wrestler who competed in sumo and professional wrestling. He was known as The Father of Puroresu, and one of the most influential persons in professional wrestling history. Initially, he had moved from his native country Korea to Japan to become a rikishi. He was credited with bringing the sport of professional wrestling to Japan at a time when the Japanese needed a local hero to emulate and was lauded as a national hero. He was inducted into the WWE Hall of Fame in 2017, becoming the first Korean inductee and the third puroresu star to be inducted after Antonio Inoki and Tatsumi Fujinami. He was killed in a street fight with a member of the Sumiyoshi-ikka in 1963.