Frank W. Dux was the inspiration for the movie Bloodsport with action star Jean Claude van Damme. Bloodsport was released in 1988 and is about Frank Dux who fights in an underground tournament the Kumite. Frank Dux studied Koga Yamabushi Ryu Ninjutsu under Shidoshi Senzo Tanaka of the Tanaka Clan. Frank W. Dux is a martial arts sensation and is considdered by some as the father of modern Gendai Ryu Ninjitsu.