Biography
Jonathan Lloyd Walker is an English actor, writer and producer. Born on 13 September 1967 in Henley-on-Thames, Oxfordshire, he grew up in England and later settled in Canada. He began acting in school plays directed by Jenny Bale and served as an officer in the Canadian Infantry before entering the industry professionally.
Walker has appeared in films including Shooter (2007), RED (2010) and The Thing (2011), and in television series such as Supernatural, Smallville, The Blacklist and Snowpiercer. As a writer and producer he has worked on Van Helsing (as executive producer and showrunner) and served as writer and executive producer on the Amazon series House of David (2025).
