Question: Which former president of All Japan Pro Wrestling (NJPW) coined the moonsault?
Context: Tetsuya Shimizu (清水 哲也 , Shimizu Tetsuya , born April 5, 1983) is a Japanese professional wrestler who has worked under the ring names T28, Tetsuya, and Tetsuya Bushi.  He works as the masked Bushi (stylized in all capital letters) for New Japan Pro Wrestling (NJPW), where he is currently in his third reign as one third of the NEVER Openweight 6-Man Tag Team Champions, while also being a former one-time IWGP Junior Heavyweight Champion.  Having worked for All Japan Pro Wrestling (AJPW) for most of his career, Bushi transferred to NJPW in April 2012.  Together with Super Crazy Bushi won AJPW's 2010 Junior Tag League and has previously won AJPW's U-30 Tag Team Tournament in 2008 with Kushida.  Bushi spent 2009 working in Mexico for International Wrestling Revolution Group (IWRG), gaining international experience before returning to AJPW in February, 2010.  Through NJPW's working relationship with the Mexican Consejo Mundial de Lucha Libre promotion, Bushi has held the CMLL World Welterweight Championship. Virtual Pro Wrestling 64 is a professional wrestling video game released in 1997 on the Nintendo 64 game console and the second game in the "Virtual Pro Wrestling" series.  The game was only released in Japan and uses a slightly remodeled version of "'s" engine.  The game features wrestlers from WCW, but also includes generic renditions of wrestlers from major Japanese promotions such as New Japan Pro Wrestling and All Japan Pro Wrestling, a feature that would continue following the release of the sequel "Virtual Pro Wrestling 2".  The game is a semi-sequel to "Virtual Pro-Wrestling" released that same year exclusively for the PlayStation.  "VPW 64" was succeeded by Virtual Pro Wrestling 2: Ōdō Keishō, which was released on the Nintendo 64 in 2000. New Japan Pro Wrestling World (NJPW World) is a subscription-based video streaming service owned by New Japan Pro-Wrestling.  On December 1, 2014, NJPW and TV Asahi announced "New Japan Pro Wrestling World", a new worldwide streaming site for the promotion's events.  All major NJPW events air live on the service, which also features matches from the promotion's archives, dating back to 1972.  In 2015, King of Pro-Wrestling marked the first ever event on NJPW World to feature English commentary, provided by Kevin Kelly and Matt Striker.  Currently, English commentary is provided by Kelly and Don Callis.  As part of a working relationship between NJPW and the Mexican Consejo Mundial de Lucha Libre (CMLL) promotion, NJPW began airing CMLL's "Viernes Espectaculares" show on NJPW World, starting July 9, 2016. The Rikidozan Memorial Show was a professional wrestling event held in 1996, and again in 2000, as a tribute to "the father of puroresu," Rikidozan (also known as Mitsuhiro Momota).  Both shows were considered major events in Japan and had involvement from virtually every major wrestling promotion at the time.  The first show was held in Yokohama, Japan at the Yokohama Arena on June 30, 1996, with 16,000 in attendance.  The show featured interpromotional matches of wrestlers from All Japan Pro Wrestling, Big Japan Pro Wrestling, Frontier Martial-Arts Wrestling, IWA Kakutoshijuku, International Wrestling Association, Japan Pro Shooting, Kitao Dojo, Michinoku Pro, New Japan Pro Wrestling, Professional Wrestling Fujiwara Gumi, Samurai Project, UWFi, Wrestle Association R and joshi promotions GAEA Japan, JWP Joshi Puroresu and Ladies Legend Pro-Wrestling.  In the main event, Genichiro Tenryu and Tatsumi Fujinami defeated Koki Kitihara and Riki Choshu in a tag team match.  On the undercard, Keiji Mutoh & Kensuke Sasaki defeated Shinya Hashimoto & Junji Hirata and a "PWFG vs. UWFI" match between Yoshiaki Fujiwara and Yoji Anjoh resulted in a double-countout. Naohiro Hoshikawa (星川直宏 , Hoshikawa Naohiro , born December 13, 1974) is a retired Japanese professional wrestler.  Hoshikawa competed extensively in Michinoku Pro Wrestling, Osaka Pro Wrestling and Pro Wrestling Zero1 until he was forced to retire after suffering a career-ending brain injury in 2004.  Hoshikawa also competed in All Japan Pro Wrestling, Big Japan Pro Wrestling, Pro Wrestling Noah and Battlarts. Yutaka Yoshie (吉江 豊 , Yoshie Yutaka , born January 5, 1974) , is a Japanese professional wrestler, currently working as a freelancer in Japan, performing most notably for All Japan Pro Wrestling (AJPW), where he is a former World Tag Team Champion.  He has previously worked for promotions such as New Japan Pro Wrestling (NJPW), where he is a former IWGP Tag Team Champion, Pro Wrestling Noah and Pro Wrestling Zero1, where he is a former NWA Intercontinental Tag Team Champion. A moonsault, moonsault press, or back flip splash is a professional wrestling aerial technique.  It was innovated by Mando Guerrero.  Much of its popularity in both Japanese and American wrestling is attributed to The Great Muta, despite it being used in North America by "Leaping" Lanny Poffo years before Muta came from Japan. The Champion Carnival (チャンピオン・カーニバル , Chanpion Kānibaru ) is a professional wrestling tournament held by All Japan Pro Wrestling (AJPW).  The tournament is also known by the nickname Haru no Saiten (春の祭典 , "Spring Festival") and is sometimes abbreviated to CC.  Created by AJPW founder Giant Baba, the tournament has been held annually since 1973 and is the longest-running singles tournament in professional wrestling, while also ranking as the most prestigious event in the AJPW calendar.  It is considered a successor to the World League, held by Japan Pro Wrestling Alliance (JWA) between 1959 and 1972, predating the New Japan Pro Wrestling (NJPW) G1 Climax tournament by a year. Francisco Islas Rueda (born December 3, 1973) is a Mexican professional wrestler, or "luchador", best known by his ring name Super Crazy.  In Mexico, Islas has worked for AAA (AAA) and made appearances for various independent promotions but is not currently associated with one specific Mexican promotion.  As Super Crazy, Islas gained American exposure by working for Extreme Championship Wrestling (ECW) between 1998 and 2000 and for World Wrestling Entertainment between 2005 and 2008.  He has also toured Japan on several occasions, working for New Japan Pro Wrestling (NJPW), Pro Wrestling Zero-One (Zero-1), All Japan Pro Wrestling (AJPW) and Pro Wrestling Noah. Keiji Mutoh (武藤 敬司 , Mutō Keiji , born December 23, 1962) is a Japanese professional wrestler who first gained international fame in the National Wrestling Alliance (NWA).  He is mostly known for his work as The Great Muta in New Japan Pro Wrestling (NJPW) during the 1990s, but he has also worked in the  United States, Puerto Rico, Mexico, and Taiwan.  He is a former president of All Japan Pro Wrestling (AJPW), as well as being a full-time wrestler for the promotion from 2002 to 2013.  He also gained the rank of the Master Sergeant during his military service in Japan.
Answer: Keiji Mutoh