Champion Carnival
From 1959 to 1972, the Japan Pro Wrestling Alliance (JWA), run by Rikidōzan, held a tournament called World League (also known as the "World Big League"), which featured both Japanese and foreign professional wrestlers. Rikidōzan himself dominated the annual tournament early on, however, after his death in 1963, the tournament was won six times by Giant Baba and once by Antonio Inoki. JWA folded shortly after both Baba and Inoki left the promotion to create All Japan Pro Wrestling (AJPW) and New Japan Pro-Wrestling (NJPW), respectively. Both men took the concept of World League with them to their new promotions, with Baba creating the "Champion Carnival" in 1973 and Inoki creating the World League in 1974, later renaming it G1 Climax.
Junji Hirata
Hirata made his debut in New Japan Pro Wrestling (NJPW) on August 26, 1978, against Yoshiaki Fujiwara. In November 1982, he left on an overseas training expedition to Mexico, and later Canada, where in Stu Hart's Stampede Wrestling he would create the famous Super Strong Machine persona, as well as use a First Nations gimmick as Sonny Two Rivers. In April 1986, he left NJPW with Riki Choshu for rival wrestling promotion, All Japan Pro Wrestling (AJPW). In June 1987, he returned to NJPW and would soon capture the IWGP Tag Team Championship on three separate occasions with George Takano, Hiro Saito, and Shinya Hashimoto as his tag team partners.