Kazuchika Okada (岡田 和睦, Okada Kazuchika, ring name: オカダ・カズチカ) (born November 8, 1987) is a Japanese professional wrestler. He is signed to New Japan Pro-Wrestling (NJPW), where he is a five-time IWGP Heavyweight Champion. Okada's fourth reign with the championship is the longest in history at 720 days; he also holds the record for most successful title defenses with twelve. Initially trained by Último Dragón and making his debut in August 2004, Okada spent his first years in professional wrestling working in Mexico, before returning to Japan and making NJPW his home promotion in mid-2007. Originally working as a junior heavyweight, Okada graduated to the heavyweight division in April 2008, with limited success. In February 2010, NJPW sent Okada on a learning excursion to American promotion Total Nonstop Action Wrestling (TNA), where he spent the next twenty months, mainly performing on the promotion's secondary television program, Xplosion. From January to March 2011, he performed under the name Okato on TNA's primary television program, Impact!, as Samoa Joe's sidekick in his rivalry with D'Angelo Dinero. Okada's run with TNA ended in October 2011 and he returned to NJPW in January 2012, repackaged as "Rainmaker" (レインメーカー, Reinmēkā), complete with a new look and a villainous persona. Just a month later, Okada defeated Hiroshi Tanahashi to win NJPW's top title, the IWGP Heavyweight Championship, which he would hold for four months before losing it back to Tanahashi. The following August, Okada won NJPW's premier tournament, the G1 Climax. At the end of the year, the Tokyo Sports magazine named Okada the 2012 MVP in all of Japanese professional wrestling. The following year, Okada first won the New Japan Cup in March and then regained the IWGP Heavyweight Championship from Tanahashi in April. After a thirteen-month reign, Okada lost the title in May 2014. Three months later, he won his second G1 Climax. Okada has since won the IWGP Heavyweight Championship three more times and headlined NJPW's biggest annual event—the January 4 Tokyo Dome Show—eight times including (2013, 2015, 2016, 2017 and 2018). In 2017, Okada became the first Japanese wrestler to top Pro Wrestling Illustrated's list of the top 500 wrestlers in the world. His matches against Kenny Omega at Wrestle Kingdom 11, Dominion 6.11 in Osaka-jo Hall and Dominion 6.9 in Osaka-jo Hall (all for NJPW's IWGP Heavyweight Championship), as well as the semi-finals of the 2017 G1 Climax, earned a respective 6, 6¼, 6, and 7 stars from Dave Meltzer of the Wrestling Observer Newsletter. The 7 star match is the highest star rating Meltzer has ever awarded.