Frank Dux

Biography

Frank William Dux (born April 6, 1956) is a Canadian-American martial artist, fight choreographer and author. According to Dux, a ninjutsu expert named Senzo Tanaka trained him as a ninja when he was a teenager. He established his own school of ninjutsu called Dux Ryu Ninjutsu, and has said he won a secret martial arts tournament called the Kumite in 1975. His alleged victory at the Kumite served as the inspiration for the 1988 film Bloodsport starring Jean-Claude Van Damme. Dux's victory at the Kumite has been disputed, as has the existence of both the Kumite he described and Senzo Tanaka.

Dux worked as a fight choreographer for Bloodsport, Lionheart (1990) and Only the Strong (1993). He detailed his alleged work for the CIA in the book The Secret Man in 1996, and that same year co-wrote the story for the film The Quest alongside Jean-Claude Van Damme. He sued Van Damme for breach of contract over the film, but lost the suit in 1998. He also lost a lawsuit against Soldier of Fortune for libel the following year, over their claims he had falsified his military and CIA service.

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Known For

Jean-Claude van Damme: Karate King

Self (archive footage)

Only the Strong

Welder

Murrow

R. & D. Director

Warrior of Justice

Put Up Your Dux: The True Story of Bloodsport

Himself

Get the Terrorists

Brock Towers

Firefight

Filmography

Year	Movie	Role
2023	Jean-Claude van Damme: Karate King	Self (archive footage)
2012	Put Up Your Dux: The True Story of Bloodsport	Himself
1995	Warrior of Justice
1993	Only the Strong	Welder
1987	Get the Terrorists	Brock Towers
1986	Murrow	R. & D. Director
1983	Firefight

Year	TV Show	Role