Frank Dux
Frank W. Dux (pronounced "dukes") is an American martial artist and fight choreographer. Dux established his own school of Ninjutsu in 1975, called "Dux Ryu Ninjutsu". He was the inspiration for the 1988 film Bloodsport starring Jean-Claude Van Damme.
Read more about Frank Dux: Martial Arts Career, Publications, Bibliography