Tyrone Clinton Spong is a Surinamese-Dutch professional boxer and mixed martial artist and former kickboxer. As a boxer, he held the WBC and WBO Latino heavyweight titles in 2018. In kickboxing, he is the former WFCA cruiserweight champion, Glory 95kg Slam Champion and It's Showtime 95MAX World champion.
Gevorg "Giorgio" Petrosyan is an Armenian-Italian kickboxer who competes in the middleweight division. Nicknamed "The Doctor", he is noted for supreme technical skills, ringsmanship, and defensive prowess which has seen him defeat some of the best strikers in the world while taking little damage. As of September 2022, he is ranked the #5 lightweight and #6 pound-for-pound kickboxer in the world by Combat Press, and is widely regarded as one of the greatest kickboxers of all time.
Dzhabar Askerov is a Russian Welterweight kickboxer fighting out of Melbourne, Australia and representing Russia. He is the World Muay Thai Council's Welterweight European Champion and K-1 MAX Scandinavia 2008 Tournament Finalist.
Dmitry "Shok" Shakuta is a Belarusian Muay Thai super middleweight kickboxer fighting out of Minsk, Belarus for the SK-55 gym. He is an eight-time amateur and professional world champion, most well-known for being the It's Showtime 77MAX world champion between 2008 and 2009.
Mohamed "Real fighter" aka Machine Khamal is a Dutch-Moroccan welterweight Muay Thai kickboxer who fought out of Amsterdam, Netherlands for Vos Gym. He is the K-1 World MAX 2010 West Europe champion, who competed in K-1 MAX and It's Showtime.
Yohan Lidon is a French Muay Thai kickboxer. He is a 3-time world champion in Muay Thai and kickboxing - including being the first ever It's Showtime 73MAX world champion.
Sitthichai Sitsongpeenong is a Thai Muay Thai kickboxer who is currently signed to ONE Championship. Sitthichai is a former Lumpinee Stadium Welterweight Champion and Glory Lightweight Champion. Combat Press ranks him as the #3 lightweight kickboxer in the world. As of March 6, 2023, he is ranked #2 in the ONE Featherweight Muay Thai rankings.
Mosab "Jaguar" Amrani, is a Moroccan-Dutch former Featherweight-Lightweight Muay Thai kickboxer fighting out of Morocco for Team Amrani.
Karim Bennoui, also known as "Le Chirurgien", is an Algerian Muay Thai kickboxer. He is a three-time WKN super featherweight champion. He is also a former It's Showtime -61 kg champion and ISKA -62.3 kg champion.
Houcine Bennoui is a French-Algerian Muay Thai kickboxer, younger brother of Karim Bennoui. He is the WFC World Muay Thai Champion.
L'houcine "Aussie" Ouzgni is a Dutch-Moroccan former Light Heavyweight/Middleweight Muay Thai kickboxer. Aussie was known as a firm fan favorite in the Netherlands due to his exciting style and knockout power, likened to a smaller version of fellow Dutch-Moroccan fighter Badr Hari. He is a three time Dutch national Muay Thai champion and a It's Showtime world champion.
Chris "The African Warrior" Ngimbi is a Congolese-Dutch Muay Thai kickboxer fighting out of Ngimbi Sports Academy in Pelt, Belgium. He is the two times It's Showtime 70MAX world champion fighting primarily within the It's Showtime and the K-1 Global Holding organizations. He also held the SUPERKOMBAT Middleweight Championship in 2016.
Murthel Cyrill Dwyth Groenhart is a Dutch-Surinamese kickboxer and mixed martial artist. Groenhart is the 2012 K-1 World MAX World Championship Tournament Champion and former Glory Welterweight Champion.
Rustemi Kreshnik is a Belgian kickboxer who competed in the heavyweight division. Having moved to Belgium from Kosovo as a youngster, Kreshnik began training in Muay Thai and kickboxing while working as a bouncer. He turned professional in 2003 and rose to prominence by claiming the Belgian and Benelux titles before going on to become a gatekeeper in the It's Showtime promotion from 2009 until the organization's demise in 2012.
Eakpracha Meenayothin is a Thai Muay Thai kickboxer. He is a former WMC and Lumpinee Stadium champion. He is also two times Toyota Vigo Marathon Tournament Champion.
Masahiro Yamamoto is a Japanese kickboxer who competes in the lightweight division. After beginning his career as a featherweight in 2002, Yamamoto became a mainstay in the All Japan Kickboxing Federation and first challenged for the AJKF Featherweight Championship in December 2004 when he fought to a draw with Genki Yamamoto. He then went on a hot streak in 2005, winning the IKUSA 2005 –60 kg Grand Prix in the process, and was given another chance at the AJKF Featherweight title in January 2006 when he beat Genki Yamamoto in a rematch to take the belt. The following years saw Yamamoto move up to lightweight and have more domestic success as he took the AJKF's Best of 60 kg Tournament 2007 and the Krush Lightweight Grand Prix 2009 before he emerged internationally with the It's Showtime promotion. He lost to Sergio Wielzen in his first attempt at the It's Showtime 61MAX Championship in December 2010 but came back to win the belt in July 2012 by defeating Javier Hernandez.
Armen Petrosyan is an Armenian-born Italian kickboxer who competes in the middleweight division. An aggressive fighter, Petrosyan began training in Muay Thai after moving to Italy from Armenia. Petrosyan and his brother Giorgio Petrosyan were put under contract with Oktagon management, he became a two-time Italian champion and a European titleist before arriving on the world stage in 2010 when he took back-to-back wins over Vuyisile Colossa and Dzhabar Askerov and later appeared as a competitor on the Enfusion reality television show. In March 2013, he won the eight-man Haarlem Fight Night IV tournament in the Netherlands to be crowned the WMTA World Super Welterweight Champion.
Filip Verlinden is a Belgian kickboxer who competes in the cruiserweight and heavyweight divisions. Verlinden was introduced to the sport at an early age and came to prominence in 2008 when he won the WKA European Super Cruiserweight Muay Thai Championship, followed by the WKA World Cruiserweight title the following year. He then took the gold medal at the 2010 IFMA World Championships in the +91 kg/200 lb division as an amateur before a short stint in the It's Showtime promotion where he unsuccessfully challenged Danyo Ilunga for the It's Showtime 95MAX Championship in June 2012. Later that year, he joined Glory.
Alim Nabiev is an Azerbaijani kickboxer, who has been professionally competing since 2010. He is the former WMC World Light Heavyweight champion.
Lucien Carbin is a Surinamese-Dutch former kickboxer, karateka and trainer. He was the first European Kyokushin karate champion, a world kickboxing champion and a European Savate and Muay Thai champion. As a trainer, he raised 49 world champions in different versions of martial arts.
Rodtang Jitmuangnon 
Timur Nadrov 
Li Ning
Daniel Puertas Gallardo 
Ba Gei
Arthur Meyer
Ognjen Topic 
Chin Ngai Chung
Vitaly Lisnyak
Hamza Essalih 
Masahiro Yamamoto 
Saša Jovanović 
Emerson Falcão 
Matteo Lippi 
Imed Boukouayel 
Gary Hamilton 
Stacy Hassell 
Suleyman Kasmi 
Yetkin Özkul