Ray Sefo is a New Zealand fight promoter and retired kickboxer, boxer, and mixed martial artist. He was the K-1 World Grand Prix 2000 Runner-up, is a six-time Muay Thai World Champion, and was an eight time K-1 World Grand Prix Finals tournament participant. He is the president of MMA promotion Professional Fighters League. In kickboxing, he defeated world champions Jerome Le Banner, Peter Aerts, Stefan Leko, Mike Bernardo, and Mark Hunt. He is widely considered to be one of the greatest heavyweight kickboxers to have never won the K-1 World Grand Prix. As mixed martial artist, he most notably competed in the now defunct Strikeforce in 2009 and 2011.
Jérôme Philippe Le Banner is a French kickboxer, mixed martial artist, and professional wrestler. Le Banner fought for most of his career in K-1 and became known for his aggressive fighting style and knockout power. He is a 2-time K-1 World Grand Prix runner up, a 2-time K-1 Preliminary Grand Prix champion, and is a multiple time world champion in Kickboxing and Muay Thai. He holds notable victories over Ernesto Hoost (twice), Francisco Filho, Mark Hunt, Sam Greco, Mike Bernardo (twice), Peter Aerts, Rick Roufus, Remy Bonjasky, Tyrone Spong, Stefan Leko (twice), Masaaki Satake, Maurice Smith, Gary Goodridge (twice), Musashi (twice), Cyril Abidi and Choi Hong-man (twice).
Remy Kenneth Bonjasky is a Surinamese-Dutch former kickboxer. He is a three-time K-1 World Grand Prix heavyweight champion, winning the title in 2003, 2004, and 2008. He is widely considered one of the greatest kickboxers of all time. Bonjasky has been known for his flying kicks, knee attacks and strong defense, hence the nickname "The Flying Gentleman".
Peter Aerts is a Dutch retired kickboxer. Known for his devastating high kicks, which earned him the nickname "The Dutch Lumberjack", he is widely considered to be one of the greatest heavyweight kickboxers of all time.
Nathan "Carnage" Corbett is a New Zealand-born Australian former Muay Thai kickboxer, who has held 11 world titles in three weight-divisions.
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.
Stefan Leko is a German heavyweight kickboxer. He is the current WKA Super-Heavyweight world champion in kickboxing, and former Muay Thai world super-heavyweight champion and Kickboxing world super-heavyweight champion, WMTA, WKN, IKBO, IKBF, and WKA world champion, K-1 European Grand Prix 1998 champion, 1999 K-1 Dream champion and two time K-1 World Grand Prix in Las Vegas tournament champion. He fights out of Team Golden Glory in Breda, Netherlands under Cor Hemmers. Since 2011 Stefan Leko is coached and managed by Tom Trautsch and won two Heavyweight World Champion Titles.
Gökhan Saki is a Turkish-Dutch kickboxer and mixed martial artist. He is a Dutch, European and World Muay Thai champion, K-1 World GP 2006 in Amsterdam tournament finalist, K-1 World Grand Prix 2008 in Hawaii champion and former Glory Light Heavyweight Champion. Saki also competed in the light heavyweight division of the Ultimate Fighting Championship.
Cosmo Alexandre Moreira da Rocha is a Brazilian professional kickboxer and mixed martial artist. He is a former It's Showtime 77MAX World Champion, WMC Intercontinental and WPMF World Champion, W5 World Champion.
Mourad "The Silent Power" Bouzidi is Dutch–Tunisian heavyweight kickboxer, fighting out of Dojo Kamakura/Team Aerts in The Hague, Netherlands. He is the current Dutch Heavyweight W.F.C.A. kickboxing champion.
James Adam McSweeney is a British retired kickboxer and mixed martial artist. A professional MMA competitor since 2005, McSweeney is well known for being a cast member of Spike TV's The Ultimate Fighter: Heavyweights and competing in the UFC, but he has also competed in major European promotions such as KSW, Cage Rage and BAMMA.
Thom Harinck is a Dutch kickboxer and kickboxing trainer and founder of the Chakuriki Gym in Amsterdam. He is married to Marjan Olfers, former member of the board of Ajax and from 1 May 2012 professor in sports law.
Chakuriki Gym was a kickboxing gym and headquartered the International Chakuriki Association located in Amsterdam, the Netherlands. It was also known as Dojo Chakuriki, Pancration Chakuriki, and Chakuriki Amsterdam. Founded in 1972, it was one of the oldest and well-established kickboxing gyms in the Netherlands. It has produced many top-level kickboxers and including K-1 world champions such as Peter Aerts, Branko Cikatić and Badr Hari. It also provided training in wrestling, as well as instruction in knockdown karate, judo, boxing and mixed martial arts.
Danyo "Dibuba" Ilunga is a former Congolese-German Muay Thai kickboxer competing in GLORY. Ilunga is a five-time kickboxing and Muay Thai world champion - most notably being the former It's Showtime 95MAX World Champion. As of November 2021, he is the 9th ranked light heavyweight kickboxer in the world according to Combat Press.
Amir "The Sphinx" Zeyada is an Egyptian-Dutch cruiserweight Muay Thai kickboxer currently fighting out of the Chakuriki Gym in Amsterdam, Netherlands, where he is trained by Thom Harinck. He is a former Dutch national champion who originally started fighting as a middleweight. Zeyada holds two notable knockout victories over the highly rated Tyrone Spong. He’s the former runner up for the Its Showtime 85MAX Championship.
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.
Randy “Boom Boom” Blake is an American kickboxer who competes in the cruiserweight and heavyweight divisions. Known for his speed and kicking ability, he began his martial arts training in karate at the age of seven before turning to kickboxing. He initially gained recognition fighting in the World Combat League, then went on the win and dominate the Xtreme Fighting League's Light heavyweight Kickboxing Championship with numerous title defenses. Blake won the ISKA World Heavyweight Muay Thai title in 2012 before going on to compete in K-1 and Glory.
The Blackzilians was a professional team of fighters in mixed martial arts, boxing, kickboxing, amateur wrestling and catch wrestling located in South Florida. The team had included former UFC champions Rashad Evans, Vitor Belfort, Eddie Alvarez and Kamaru Usman.
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.
Kill Cliff FC, officially known as Kill Cliff Fight Club is a mixed martial arts gym based in Deerfield Beach, Florida. It was originally founded in 2017 by Henri Hooft and Greg Jones as Combat Club and later Hard Knocks 365 before being rebranded to Sanford MMA in 2019 after obtaining a sponsorship deal with Sanford Health. In July 2022, the gym rebranded to Kill Cliff FC.
Gökhan Saki 
Tommy Varga
Samir Benazzouz
Alexey Ignashov 
Stefan Leko