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).
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 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.
Alistair Cees Overeem is a Dutch former professional mixed martial artist and kickboxer. He is a former Strikeforce Heavyweight Champion, Dream Heavyweight Champion, K-1 World Grand Prix Champion, and was the first fighter to hold world titles in MMA and K-1 kickboxing at the same time. Overeem is also a one-time challenger for the UFC Heavyweight Championship.
Sem "Semmy" Schilt is a Dutch actor and former kickboxer, Ashihara karateka and mixed martial artist. He stands 206 cm and weighs 171 kg. Schilt holds the distinction of being the only kickboxer to have won 5 major heavyweight tournaments, being a four-time K-1 World Grand Prix Champion and one time Glory Heavyweight Grand Slam Champion. He also held the K-1 Super Heavyweight Championship and the Glory Heavyweight Championship titles. He is the only fighter in K-1 history to win the world championship three times in a row, and also shares the record with Ernesto Hoost for most Grands Prix won, with four.
Badr Hari is a Moroccan-Dutch kickboxer and former mixed martial artist. He is a former K-1 Heavyweight World Champion (2007–2008), It's Showtime Heavyweight World Champion (2009–2010) and K-1 World Grand Prix 2008 and 2009 finalist. Known for his aggressive and explosive fighting style, Hari is widely considered one of the greatest kickboxers of all time.
Peter Graham is an Australian karateka, kickboxer, boxer and mixed martial artist.
Zabit Samedov is an Azerbaijani kickboxer and muay thai fighter. Samedov has won multiple titles, most notably the K-1 World Grand Prix 2009 in Łódź tournament championship. He was also a competitor in the K-1 World Grand Prix FINAL in Zagreb final 8, and is a former It's Showtime 95MAX World Championship challenger.
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.
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.
Brian "Bad Ass" Douwes is a Dutch kickboxer fighting out of Team Spirit, formerly known as Top Team Beverwijk in Beverwijk. He competed in K-1, Enfusion Live, Superkombat and Glory.
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.
Ewerton Teixeira is a Brazilian professional kickboxer, mixed martial artist, and Kyokushin Kaikan karateka. Teixeira obtained his first K-1 title in 2008 at K-1 World Grand Prix 2008 in Fukuoka by beating Keijiro Maeda in the final. He is training K-1 at the Ichigeki Academy Kyokushin Kaikan in Tokyo, Japan. Despite the short career for a kickboxer, Teixeira has notable wins against K-1 legends: Jerome Le Banner, Errol Zimmerman and Musashi.
Daniel Ghiță is a Romanian politician and former kickboxer, who serves as a member of the Chamber of Deputies of Romania since December 2020.
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.
Hesdy Gerges is a Dutch kickboxer and mixed martial artist. He held the It's Showtime World Heavyweight title between 2010 and 2012. Gerges has competed in the K-1, It's Showtime, SUPERKOMBAT and Glory promotions.
Anderson Manoel da Silva, better known as Anderson Braddock, is a Brazilian heavyweight kickboxer and mixed martial artist. He has competed in the It's Showtime, K-1, SUPERKOMBAT, ONE Championship, and GLORY.
Rico Verhoeven is a Dutch professional kickboxer, former professional boxer and mixed martial artist who currently competes in the heavyweight division of GLORY, where he is the reigning Glory Heavyweight Champion. A professional since 2004, he also competed in the K-1, It's Showtime and SUPERKOMBAT promotions. He is currently ranked the number one heavyweight in the world by Combat Press. Verhoeven has been continually ranked as the number one heavyweight kickboxer in the world by Combat Press since September 2014, when the rankings were first established.
Ismael Londt is a Surinamese-Dutch kickboxer.
Fatih Ulusoy
Daniel Sam 
Ismael Londt 
Makoto Uehara 
Xhavit Bajrami 
Sergei Kharitonov 
Prince Ali
Ewerton Teixeira 
Min Ho Song