Aaron Richard Ashmore (born October 7, 1979) is a Canadian actor. He is known for his television roles as Jimmy Olsen in Smallville, Steve Jinks in Warehouse 13, John Jaqobis in Killjoys, and Duncan Locke in Locke & Key. He has also appeared in numerous films and television productions throughout his career. Ashmore is the identical twin brother of actor Shawn Ashmore.