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.
Ruslan Savelyevich Karaev (Karayev) (Russian: Русла́н Саве́льевич Кара́ев, romanized: Ruslan Savelyevich Karayev; Ossetian: Хъараты Савелийы фырт Руслан, romanized: Qaraty Savelijy fyrt Ruslan; born May 19, 1983) is a Russian kickboxer. He is K-1 World GP 2005 in Las Vegas and K-1 World Grand Prix 2008 in Taipei tournament champion. He joined the Golden Glory's K-1 stable, training under Cor Hemmers.
Paul "The Sting" Slowinski is a Polish-Australian 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.
Magomed "The Propeller" Magomedov is a Russian former kickboxer fighting out of Chinuk Gyn from Minsk, Belarus. He was a six time amateur Russian kickboxing champion, European WAKO champion and as a professional he held the WMC, IMF Light Heavyweight World Muay Thai Champion and won three k-1 tournaments.
Martin Holm was a Swedish Muay Thai kickboxer and former WMC Muaythai World Champion. In K-1 he fought against some of the biggest stars at the time, like Ernesto Hoost, Ray Sefo, Michael McDonald and Glaube Feitosa.
Björn Heinrich Walter Bregy is a Swiss heavyweight kickboxer, European Yoseikan Budo champion and K-1 Europe 2006 in Amsterdam tournament Champion. He holds notable wins over Gokhan Saki, Ray Sefo, Alexander Ustinov, Freddy Kemayo (twice), and Alexey Ignashov.
Ondřej Hutník is a retired Czech Muay Thai kickboxer. He is a former SUPERKOMBAT Super Cruiserweight Championship title challenger.
Marcus Öberg is a Swedish middleweight Muay Thai Fighter and kickboxer fighting out of Malmö Muay Thai Gym in Malmö. He is a former two time Swedish champion and K-1 Scandinavia MAX 2008 tournament winner.
Serhiy Lashchenko, also spelled as Sergii Lashchenko and Sergei Lascenko, was a Ukrainian kickboxer. He was a K-1 and Superkombat Heavyweight.
Priest Tyron Thomas West is a German light heavyweight kickboxer, who competed in Muay Thai. He is a former WMC European Muay Thai Champion, IKBF European Champion, IKBF World Champion K1 and WKA World Champion K1.
Sem "Semtex" Braan is a Dutch Muay Thai super middleweight kickboxer fighting out of Amsterdam, Netherlands for Mejiro Gym. He is the 2008 It's Showtime Reality Show winner currently competing in the It's Showtime 77MAX division.
Dmitry 'Black Valet' Valent is a Belarusian Muay Thai middleweight/super middleweight kickboxer. He is the former WKN Middleweight Oriental rules and Muay thai champion, former WMC Light Heavyweight champion, two time WMC I-1 World Muaythai Grand Slam champion and two time Kunlun Fight 80 kg tournament runner-up.
Alexei Kudin is Belarusian former professional kickboxer and mixed martial artist. He is a world champion and European versions WBKF, King of Kings – Grand Prix K-1 tournament finalist, which was held December 16, 2010, in Odintsovo. In addition to competition in kickboxing, Alexei Kudin had many professional fights in mixed martial arts.
Abdarhmane Coulibaly is a French Muay Thai kickboxer. He has competed for GLORY, SUPERKOMBAT Fighting Championship and Kunlun Fight.
Emil Zoraj is a Croatian Light heavyweight kickboxer fighting out of Zagreb, Croatia. In his career he was double WKA thaiboxing world champion, It's Showtime 75MAX trophy Tilburg tournament champion, WBC Muaythai intercontinental champion and OPBU Euro-African muaythai champion.
Sergiano Herbert Cairo, better known as Redouan Cairo is a Surinamese-Dutch kickboxer fighting in the Superkombat Fighting Championship where he is the 2013 Superkombat World Grand Prix Tournament Runner-up. Also a Mixed martial artist, he is a former WAKO-Pro world cruiser heavyweight K-1 rules -94.1 kg champion.
Dmitri Bezus, also spelled as Dmytro Bezus, is a Ukrainian heavyweight professional boxer and kickboxer, managed by WKN Top Team. As a kickboxer, Bezus has fought for Kunlun Fight, Glory, and K-1.
Alexander Oleinik is a Ukrainian professional Kickboxing and Muay Thai fighter who competes in the middleweight, light heavyweight and cruiserweight divisions. He has begun practicing Kyokushin Karate in early childhood at the age of six. Shortly he became a Ukrainian champion in the youth division. At the age of 17 he started practicing Muay Thai.
Iraj Azizpour is an Iranian heavyweight kickboxer. He is the former Kunlun Fight heavyweight kickboxing champion, and was ranked among the top 10 kickboxers in the world in 2018 by Liver Kick, as well as being ranked in the top ten by Combat Press between March 2018 and March 2019. Azizpour is currently ranked as the number 8th Heavyweight in the world by Combat Press Holds notable victories over Ismael Londt, Anderson Silva, and the current ONE Light Heavyweight Kickboxing World Championship Roman Kryklia
Swedish 
