|Birthday||January 29, 1977|
|Birth Place||Knoxville, Illinois|
|Appearances||An Embarrassment of Bitches|
Hartley is best known for his roles as Oliver Queen on Smallville and also on the former daytime soap opera Passions for his role of Fox Crane.
Justin Hartley's appearance on Castle marks the sixth appearance of an actor who had previously or would go onto portray a DC Comics character in either animation or live-action, preceded by leads Nathan Fillion (Wonder Woman, Green Lantern: Emerald Knights, Justice League: Doom, Justice League: The Flashpoint Paradox), Stana Katic (Superman: Unbound), Molly Quinn (Superman: Unbound) and fellow guest stars George Newbern (Justice League Unlimited, Superman vs. the Elite, Superman/Shazam! The Return of Black Adam) and Dana Delany (Superman: The Animated Series, Justice League Unlimited, Justice League: The Flashpoint Paradox).