Rick John Roufus is a retired American kickboxer. He has also competed professionally in boxing and mixed martial arts. An accomplished professional fighter throughout his competitive career, Roufus has won multiple world championships across the globe in several weight classes. He was world champion as a super middleweight, light heavyweight and heavyweight. Roufus held titles for all the major kickboxing associations worldwide, and is known for his boxing skills and powerful kicks.
Branko Cikatić was a Croatian heavyweight kickboxer, the first Croatian-born fighter to achieve international success. He is widely considered to be one of the greatest heavyweight kickboxers of all time. He was the first K-1 World Grand Prix Champion. The tournament was held on April 30, 1993 in Japan.
Jeffrey Ryan "Duke" Roufus is an American former kickboxer and head coach of the Roufusport based in Milwaukee, Wisconsin, United States. He is a well-known striking coach in North America.
The ISKA is international bodies regulating sport karate and kickboxing matches. It is based in the United States. It was established in 1985 as a response to legal and revenue issues that sent the Professional Karate Association (PKA) into decline.
Dennis Alexio is an American former professional kickboxer and actor who competed in the light heavyweight, cruiserweight and heavyweight divisions. Beginning his career as a light heavyweight in 1980, Alexio embarked on an extensive, knockout-laden undefeated streak before losing a decision to Don "The Dragon" Wilson in a World Kickboxing Association (WKA) World Super Light Heavyweight Full Contact Championship match in 1984. He rebounded from this by winning the Professional Karate Association (PKA) World Light Heavyweight title that same year before moving up to cruiserweight and taking the International Sport Karate Association (ISKA) World Cruiserweight Full Contact title.
Maurice Lavonne Smith is a retired American kickboxer and mixed martial artist. In kickboxing, he held the WKC world light heavyweight championship, the WKA world heavyweight championship, and the ISKA world heavyweight championship. In mixed martial arts, he held the Heavyweight championship in Battlecade Extreme Fighting and the UFC, and became a member of the UFC Hall of Fame in 2017. A professional competitor since 1980, Smith has formerly competed in kickboxing for the companies All Japan Enterprise and K-1, Pancrase, RINGS, PRIDE, Strikeforce, International Fight League and RFA.
Donald Glen Wilson, nicknamed "The Dragon", is an American martial artist, former professional kickboxer, and actor. An 11-time world champion who scored 47 knockouts in four decades, he has been called by the STAR System Ratings as "perhaps the greatest kickboxer in American history. He has disposed of more quality competition than anyone we've ever ranked". In 2015, he was inducted into the International Sports Hall of Fame.
Robert Diem Kaman was a Dutch nine-time kickboxing and Muay Thai world champion. He was often called "Mr. Low Kick" because of his feared low kicks which he used to set up his devastating offensive attacks.
Masaaki Satake is a Japanese former heavyweight karateka, kickboxer, professional wrestler and mixed martial artist. He is one of the pioneering heavyweight fighters in K-1, having been a member of Kazuyoshi Ishii's Seidokaikan school.
Marek "The Punisher" Piotrowski is a Polish retired heavyweight kickboxer and boxer. He is a former ten time kickboxing world champion.
Xhavit Bajrami[a] is a Swiss former kickboxer who competed in the heavyweight division. A Seido karate practitioner and Andy Hug student, Bajrami built up an undefeated record domestically before he was recruited by K-1 where he won the K-1 Braves '99 tournament and finished as runner-up in two other tournaments. He is also a two-time Muay Thai world champion, having won the ISKA World Super Heavyweight title in 2004 and the WKN World Super Heavyweight strap in 2010.
Richard P. "Rick" Cheek is an American kickboxer and mixed martial artist who competes in the heavyweight division. A North American Muay Thai champion as an amateur, Cheek turned professional in 2005 and debuted in K-1 the same year. He holds notable wins over WSOF standout Dave Huckaba in MMA, 2001 K-1 Japan Grand Prix Champion Nicholas Pettas and multiple time world kickboxing champion Mike Sheppard.
Dževad Poturak is a Bosnian heavyweight kickboxer, fighting out of Jumruk Gym in Sarajevo, Bosnia and Herzegovina. He is the former WAKO Pro World Low-Kick champion and K-1 Fighting Network Prague 2007 tournament champion.
Ian "Powerhouse" Jacobs is an Australian kickboxer and former 3 time World Kickboxing Champion.
Andre Mannaart is a Dutch former kickboxer and mixed martial artist. He was four times world champion in kickboxing and Muay Thai, having fought against K-1 legends such as Ernesto Hoost, Branko Cikatić, Maurice Smith and Ray Sefo. He is now a trainer at the Mejiro Gym in Amsterdam, where he has coached fighters of the calibre of Peter Aerts and Remy Bonjasky.
Kevin Rosier was an American kickboxer, boxer and mixed martial artist. He had much success as a kickboxer, winning a number of titles, but did not transition particularly well into the world of boxing and was mostly seen as a journeyman fighter. Notably, he also took part at the inaugural Ultimate Fighting Championship event in 1993 where he reached the semi-finals.
Dennis Alexio vs. Stan Longinidis was a heavyweight kickboxing bout that took place at the Melbourne Sports and Entertainment Centre in Melbourne, Australia on 6 December 1992. As one of the most highly anticipated fights in the sport's history, it ended in an anticlimax when Longinidis broke Alexio's leg with a low kick within ten seconds of the first round.
Dennis Alexio vs. Branko Cikatić was a heavyweight kickboxing bout that took place at the Thomas & Mack Center in Las Vegas, Nevada, US, on March 16, 1992, which ended in a controversial technical draw.
Marek Piotrowski vs. Don "The Dragon" Wilson was a light heavyweight kickboxing bout that took place in Chicago, Illinois, USA on November 4, 1989, in which heavy favourite Wilson lost in a surprise upset.
Simon Dore is a retired professional kickboxer from Leicester, England. Dore was a former WKN world heavyweight kickboxing champion who fought most of his career under 'full-contact' rules but would also compete under 'free-style' rules and fought twice in K-1.
Australian 
