Roger Winston Yuan (born January 25, 1961) is an American martial arts fight trainer, stunt coordinator / performer, and actor who has trained many actors and actresses in many Hollywood films. As an actor himself, he also appeared in Shanghai Noon (2000) opposite Jackie Chan, Bulletproof Monk (2003) alongside Chow Yun-fat, the technician in Batman Begins (2005), and as Sévérine’s bodyguard in Skyfall (2012). He is a well-recognized choreographer in Hollywood.