Dennis Raymond Alexio is an American former professional kickboxer and actor who competed in the light heavyweight, cruiserweight and heavyweight divisions. Starting out as a light heavyweight, Alexio kicked off his career with an extensive, knockout-laden undefeated streak before losing a decision to Don "The Dragon" Wilson in a World Kickboxing Association (WKA) World Super Light Heavyweight Full Contact Championship match in 1984. He rebounded from this by winning the Professional Karate Association (PKA) World Light Heavyweight title that same year before moving up to cruiserweight and taking the International Sport Karate Association (ISKA) World Cruiserweight Full Contact strap. In the late 1980s, he began his transition to the heavyweight division where he won six world titles and was considered the undisputed World Heavyweight Champion. He faced the two toughest tests of his career in 1992 against Branko Cikatić and Stan Longinidis - both of whom were heavier fighters - fighting to a controversial draw with Cikatić and losing to Longinidis via an early low kick KO which resulted in a broken leg.
Dale Cook is an American former kickboxer who competed in the middleweight, super middleweight, light heavyweight and cruiserweight divisions. With a background in karate and taekwondo, Cook debuted professionally in 1977 and spent the early part of his career as a full contact rules fighter. In the 1980s, he began fighting under Oriental and Muay Thai rules and took two world titles under the WKA banner. A short stint in shoot boxing towards the end of his career in the mid-1990s resulted in another world title in that discipline.
The World Kickboxing Association (WKA) also known as World Kickboxing and Karate Association, is one of the oldest and the largest amateur and professional sanctioning body for kickboxing and Karate.
Jomhod "King of the Ring" Kiatadisak is a professional Muay Thai fighter from Phang Nga province in the South of Thailand. He started learning muay Thai at the age of 7 and won his first fight when he was 11 years old. In 1986, Jomhod won the Southern Thailand Championship in 59.6 kg weight category and the same year, at the age of 16, he moved to Bangkok and began his proper fighting career.
Thohsaphol Sitiwatjana is a Thai martial artist and Muay Thai instructor. He is known as Master Toddy because after moving to the UK, people were unable to pronounce his name correctly. Thohsaphon has been a Muay Thai instructor since the age of 16 and has trained over 40 world champions over 5 decades. He has also featured in several movies and produced his own television shows.
John Wayne "The Gunslinger" Parr, also known as JWP, is a retired Australian Muay Thai fighter, kickboxer and boxer, fighting out of Boonchu Gym in Gold Coast, Queensland. He is a former 10-times World Champion and was the runner up on The Contender Asia.
Yohan Lidon is a French Muay Thai kickboxer. He is a 3-time world champion in Muay Thai and kickboxing - including being the first ever It's Showtime 73MAX world champion.
Besim Kabashi was a Kosovar-German kickboxer who competed in the light heavyweight, cruiserweight and heavyweight divisions. He began his training in Germany after emigrating from Kosovo and initially competed as a -79 kg/174 lb fighter before moving up through the weight classes until eventually reaching heavyweight. After stints as a German and European champion, Kabashi won the WKA World Heavyweight Muay Thai title in 2008 which he held until his death in December 2011.
Manson Howard Gibson is a retired American kickboxer and a 12-time world champion in kickboxing and Muay Thai. He was known for his vicious use of spinning techniques and wild, unpredictable style, mixing elements of kickboxing, Taekwondo and Northern Praying Mantis martial arts. He was sometimes referred to as the "Thai Killer" or the "Black Bruce Lee". Gibson was one of America's greatest kickboxers, and is credited with over 100 wins and more than 80 KOs, including around 40 via headkick.
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.
Fadi Merza is a retired Syrian born Austrian-Assyrian middleweight kickboxer. Merza was a multiple world kickboxing and Muay Thai champion.
Gilbert Ballantine is a Surinamese-Dutch retired professional kickboxer and a nine-time kickboxing and Muay Thai world champion. He also took part in mixed martial arts competition, winning three Rings Dutch championships.
Gabriel Varga is a Canadian kickboxer who competes in the Lightweight division of Karate Combat. He is a former Bellator KB Featherweight champion, former two time Glory Featherweight champion, and former WKN lightweight champion.
Alexis Rufus is an English Muay Thai kickboxer who competes in the bantamweight and featherweight divisions. Having turned professional in 2005, Rufus is a two-time European and five-time world champion.
Lisa Howarth is a retired British professional kickboxer who is a former World Kickboxing Association champion.
Vichean Bootdee, more popularly known under the ring name of Chamuekpet Hapalang is a Thai former Muay Thai fighter and professional boxer. Chamuekpet holds the unbroken record of total number of Lumpinee and Rajadamnern belts won, earning 9 titles in total across 7 weight classes. He fought in Bangkok in the late 1970s to the mid 1990s, and later on fought in Japan where he would also become a well-known Muay Thai trainer.
Kensaku Maeda is a Japanese former professional Kickboxer, former K-1 WORLD GP Japan producer. He is also renowned as the founder and head trainer of the successful kickboxing gym Team Dragon.
Boonlai Sor.Thanikul, also anglicized as Boonlay Sor.Thanikun, is a former Thai Muay Thai fighter. He is respected as one of the most skilled fighters of the Muay Thai golden era who fought a wide variety of opponents.
Pettawee Sor.Kittichai is a Thai Muay Thai fighter.
Mafuang Weerapol (Thai: มะเฟือง วีรพล; is a retired Thai Muay Thai fighter.
Lance Lewis
Pete Cunningham 
Darrell Eckles
Samaisuk Chuwattana
Joao Vieira
Kyoji Saito
Brian Cullen
Mohamed Jami
Jin
Lucien Carbin