Akio Mori, better known by the name Musashi (武蔵), is a Japanese former professional karateka and kickboxer. He is a four-time K-1 Japan tournament champion, a former WAKO Heavyweight Muay Thai champion and two-time K-1 World Grand Prix finalist. Following a 14-year career, he announced his retirement at a press conference in Tokyo on August 26, 2009.
Alexey Ignashov is a Belarusian former Heavyweight kickboxer. He is a four-time Muay Thai World champion, K-1 World GP 2003 in Paris and K-1 World GP 2001 in Nagoya tournament champion. As of 2011 he is living in Auckland, New Zealand and training at Balmoral Lee Gar Gym under Lollo Heimuli.
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).
Peter Aerts is a Dutch semi-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.
Paul "The Sting" Slowinski is a Polish kickboxer, a four-time World Muay Thai Council (WMC) Muay Thai World champion and two-time K-1 World GP 2006 in Auckland and K-1 World GP 2007 in Amsterdam champion. After two years training in Amsterdam, Netherlands under Ernesto Hoost, Slowinski moved back to Adelaide in 2009 and began to teach and train out of Rikers Gym. He has competed in the K-1 and SUPERKOMBAT promotions.
Alexander "Sasha" Ustinov is a Russian professional boxer, former kickboxer and mixed martial artist. In boxing, he has challenged once for the WBA (Regular) heavyweight title in 2017.
Siala-Mou Siliga, often billed as Mighty Mo is a former American Samoan kickboxer, bare knuckle boxer, boxer and mixed martial artist who competed in the Heavyweight division. At the age of 22, he got his nickname from his former American football coach after the battleship USS Missouri. His K-1 achievements include winning the K-1 World Grand Prix 2004 in Las Vegas II and the K-1 World Grand Prix 2007 in Hawaii tournaments. In mixed martial arts, he has competed for K-1 Hero's, Bellator MMA, DREAM, Road FC and also participated in the Dynamite!! USA and Dynamite!! 2008 events. On September 24, 2016, Siliga won the Road FC Openweight Tournament at Road FC 33 by knocking out Choi Hong-man of South Korea.
Artur Kyshenko is a Ukrainian middleweight kickboxer, fighting out of Kyshenko Gym. He is the 2015 Kunlun Fight 80 kg Tournament World Champion and K-1 World MAX 2008 Finalist.He was ranked as the #1 Welterweight in the world by Combat Press from September 2017 until February 2020, when he transitioned into boxing. He had been continually ranked in the welterweight top ten by Combat Press since September 2014. On 24 July 2019, Kyshenko was suspended for 4 years by National Anti-Doping Agency of France (AFLD) after testing positive for prohibited substances.
Errol Zimmerman is a Curaçaoan-Dutch kickboxer, representing the Hemmers Gym in Breda, Netherlands. He is K-1 World Grand Prix 2008 in Amsterdam and SUPERKOMBAT Fight Club tournaments champion. Zimmerman is also former Glory Heavyweight Championship and K-1 Super Heavyweight Championship challenger. In 2011 WIPU voted him the Kickboxer of the Year.
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.
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.
Serhiy Lashchenko, also spelled as Sergii Lashchenko and Sergei Lascenko, was a Ukrainian kickboxer. He was a K-1 and Superkombat Heavyweight.
Lithuania Bushido Federation, also known as Bushido Lithuania, is the largest combat sports promotion in Lithuania.
Jean-Claude Leuyer, or simply Jean Claude, is an American former heavyweight kickboxer. He was a six-time world champion, holding titles in four different organizations, and competing in sixteen world title fights. He holds notable wins over Rob Kaman and Tomasz Kucharzewski in K-1.
Sergej Maslobojev; born 22 May 1987), nicknamed 'Kuvalda' ('Sledgehammer'), is a Lithuanian mixed martial artist, boxer and kickboxer, currently signed with GLORY, where he is the former Glory Light Heavyweight champion. He is ranked as the third best light heavyweight in the world by Combat Press as of September 2022, and third best by Beyond Kickboxing as of October 2022.
Curtis Schuster is a former American Thai boxer. He was a two-time world champion in kickboxing and Muay Thai. Schuster's last fight was in 1998 at the K-1 World GP 1998 in Las Vegas.
Roman Olegovich Kryklia is a Ukrainian heavyweight kickboxer currently signed to ONE Championship where he competes in both Light Heavyweight and Heavyweight division in Kickboxing, where he is the inaugural and current ONE Light Heavyweight Kickboxing World Champion. along with the inaugural and current ONE Heavyweight Muay Thai World Championship.
King of Kings, or KOK, is a European kickboxing promotion founded in 2009. The company has its headquarters in Vilnius, Lithuania.
Sebastian Cosmin Cozmâncă is a Romanian Muay Thai kickboxer who competes in the heavyweight division. He is currently signed to the Dynamite Fighting Show. He formerly competed in the Superkombat Fighting Championship and the Colosseum Tournament. He was Cătălin Moroșanu's teammate and training partner.
Pascal Touré is a French Muay Thai kickboxer.
TBA
Florin Ivănoaie
Samuele Pugliese
Pavlos Kochliaridis
Jakub Doman
Sergej Maslobojev 
Thomas Gosso
Dawid Panfil
Tariq Osaro 
Alexandru Velenciuc
Sami Kerim
Victor Peixoto