Masato Kobayashi is a Japanese retired welterweight kickboxer. He was the ISKA World Welterweight Oriental Rules champion, as well as the winner of the K-1 WORLD MAX World tournament in 2003 and 2008. In addition, he was also the runner-up of the K-1 World MAX World tournament in 2004 and 2007.
Andy Souwer is a Dutch former kickboxer and mixed martial artist. He is a two-time K-1 World MAX champion and four-time Shootboxing World tournament champion as well as former It's Showtime 70MAX world champion, fighting out of Mejiro Gym in Amsterdam.
Gagik Harutyunyan, better known as Gago Drago, is an Armenian-born Dutch welterweight kickboxer from Alkmaar. He is known for his punch combinations and unpredictable kicking techniques and highly aggressive fighting style. Gago competed in K1-MAX and is trained at Loeks Gym, by Edwin van Os.
Albert “The Hurricane” Kraus is a Dutch kickboxer. He was the first K-1 World MAX Tournament Champion in 2002 and also the first SUPERKOMBAT Middleweight Champion. Kraus has also held four separate world titles in kickboxing and Muay Thai. He is currently fighting out of Super Pro Gym.
K-1 WORLD MAX 2007 World Championship Final was a kickboxing event promoted by the K-1 organization. It was the sixth annual K-1 World MAX final for middleweight kickboxers, involving eight finalists and four reserve fighters, with all bouts fought under K-1 rules. Seven of the finalists had won elimination fights at the K-1 World MAX 2007 World Tournament Final Elimination, while the eighth, Gago Drago, had been invited despite losing his elimination match. Another defeated elimination fighter Virgil Kalakoda would be called up to take part in a reserve fight, while the other three reservists were invitees. As well as tournament fights there was an opening fight and two super fights fought under K-1 rules. In total there were eighteen fighters at the event, representing ten countries.
Warren "Chaka Zulu" Stevelmans is a South African kickboxer, fighting out of Vos Gym in Amsterdam, Netherlands. He is the K-1 MAX Netherlands 2008 tournament 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.
Marco "The Sniper" Piqué is a Surinamese-Dutch welterweight kickboxer, fighting out of Team Snipers in The Hague, Netherlands. He is the current World Full Contact Association Muay Thai middleweight world champion, WMC intercontinental champion, and a two-time K-1 MAX regional tournament finalist.
Alviar "The Machine" Lima is a Cape Verdean-Dutch retired kickboxer who fought out of Rotterdam, Netherlands. He made his K-1 debut against Warren Stevelmans in K-1 MAX Netherlands 2008 The Final Qualification.
"Fast" Faldir Chahbari is a Moroccan-Dutch former welterweight kickboxer who fought out of Morocco. He a x2 Muay Thai amateur world champion and is the former World Full Contact Association (W.F.C.A.) Thai-boxing junior middleweight world champion.
K-1 World MAX 2006 World Championship Final was a kickboxing event promoted by the K-1 organization. It was the fifth K-1 World MAX final for middleweight kickboxers, involving eight finalists and two reserve fighters, with all bouts fought under K-1 rules. Seven of the finalists had won elimination fights at the K-1 World MAX 2005 World Tournament Open, while the eighth, Virgil Kalakoda, had been invited despite losing his elimination match. The two reserve fighters had qualified via preliminary tournaments; Artur Kyshenko had won the K-1 East Europe MAX and Rayen Simson had won the K-1 MAX Netherlands. As well as tournament matches there were also a two opening fights and two super fights fought under K-1 rules. In total there were eighteen fighters at the event, representing nine countries.
Shemsi Beqiri is a Swiss kickboxer who competes in the middleweight division.
Rayen "Red Bean" Simson is a Surinamese-Dutch former super middleweight Muay Thai kickboxer. He won 7 world titles in 3 different organizations and was ranked number 2 at the Lumpinee Stadium - a notoriously difficult achievement for a farang fighter. He has also won a European title, 2 Dutch titles and has won tournaments in Shoot Boxing and K-1 MAX. During his career he has amassed over 100 wins and he holds notable victories over fighters such as Ramon Dekkers, Ashwin Balrak and Faldir Chahbari. He had his last fight in 2010.
Perry M. Johannes Ubeda is a Dutch former super middleweight kickboxer. Between 1992 and 2008 he won thirteen titles in kickboxing, as well as titles in taekwondo and pro-boxing and he is also a keen Motocross racer. Ubeda is now retired and runs his own gym, Ubeda Gym, in his home town of Nijmegen.
José 'The Devil's Advocate' Reis is a Portuguese Muay Thai kickboxer of Cape Verdean descent fighting out of Lisbon, Portugal for Olival Gym at either welterweight or super middleweight. He is the 2010 W.F.C.A. Full Contact world champion and a x2 K-1 MAX regional champion who has fought for both the K-1 MAX and SuperLeague organizations. His younger brother, Luis Reis, is also a successful kickboxer.
Ali Gunyar is a Turkish-Dutch middleweight Muay Thai kickboxer fighting out of Eindhoven, Netherlands for Team Gunyar, where he is trained by his brother Suleyman Gunyar. Ali is a four-time kickboxing and Muay Thai world champion, who has made appearances for the K-1 MAX, SuperLeague and It's Showtime organizations. As of 2011 Ali is the current W.I.P.U. "King of the Ring" super middleweight world champion in K-1 rules
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.
Valdrin Vatnikaj is an Albanian-Belgian kickboxer who competes in the lightweight and welterweight divisions. In 2009, he won the WFCA European Championship before becoming a world champion in 2010 by taking the Kombat League 63.503 kg/140 lb world title.
Abraham Roqueñi Iglesias is a Spanish welterweight kickboxer. He was the K-1 MAX Spain 2004 tournament winner, and is a former ISKA, WAKO and WFCA world champion. He holds notable wins over Gago Drago, Luis Reis, Andy Souwer, Giga Chikadze, and Artur Kyshenko.
Henri van Opstal is a Dutch kickboxer who competes in the middleweight division. Van Opstal came to prominence by winning the WMC European Junior Middleweight Championship but found further success competing in Japan, taking wins over a number of the countries' top middleweights and finishing as runner-up in the Shoot Boxing World Tournament 2012.
Thomas Doeve
Marvin Sansaar
Ramzi Tamaditi
Armen Petrosyan 
Cagri Ermis
Otmar Diagne
Yasuhiro Kido 
Ali Gunyar 
Omayev Shamil
Anthony Kane
Tanit Im On