Aaron Richard Ashmore is a Canadian actor. He is known for his roles on American television series such as Jimmy Olsen on Smallville, Steve Jinks on Warehouse 13 and Johnny Jaqobis on the Canadian television series Killjoys. He is the identical twin brother of actor Shawn Ashmore.

Jimmy Olsen is a fictional character appearing in American comic books published by DC Comics. Olsen is most often portrayed as a young photojournalist working for the Daily Planet. He is close friends with Lois Lane and Clark Kent, and has a good working relationship with his boss Perry White. Olsen looks up to his coworkers as role models and parent figures. From 1954 to 1982, Olsen appeared in 222 issues of the comic series Superman's Pal Jimmy Olsen and Superman Family, in addition to the main Superman titles.