William Duen Wai-Lun, born in 1958, is a notable figure in Hong Kong cinema, especially revered by collectors for his roles within Jackie Chan's illustrious filmography. As a bodyguard for Chan from 1988 to 2003, Duen not only protected the action star but also contributed to numerous films, showcasing his skills as a character actor. His standout performance in "Police Story 3: Super Cop" (1992) solidified his reputation, blending action and comedy in a film that remains a cult classic among fans and collectors alike. Duen's work in "High Risk" (1995) demonstrates his unique ability to blend humor with action, pushing the envelope by satirizing the very persona he helped to protect. Additionally, his role in "Gorgeous" (1999) further highlights his charm, as he and fellow bodyguard Ken Lo humorously portray exaggerated versions of themselves. Collectors seek out Duen's films not only for their entertainment value but also for their significance in the evolution of action cinema, making his works essential additions to any serious physical media collection.