Kam Yuen, (born in Hong Kong), is a Chinese-born American martial arts expert who was the consultant and stunt coordinator for the original television series Kung Fu. He also played the roles of Wong Ti and Lin Wu in the series and was the double for Keye Luke, who played Master Po in the series. Yuen was David Carradine's martial arts instructor. He credited Yuen as the inspiration for the series' main character, Kwai Chang Caine; Carradine’s book, The Spirit of Shaolin, was dedicated to Kam. A grandmaster of Shaolin kung fu and known as the "Praying Mantis of North America" for his skill in the fighting style, Yuen’s film credits include the role of Red Band in Circle of Iron, co-written by Bruce Lee which was produced posthumously and also stars Carradine, and Project Eliminator".