(portrayed by Mehcad Brooks) became the superhero Guardian. An alternate reality version of James Olsen / Guardian appears in "Crisis on Earth-X". This Guardian is a member of the Freedom Fighters from Earth-X who wears a costume patterned after the American flag. He is tasked with protecting a temporal gateway from the New Reichsmen, but is killed by Nazi Führer Oliver Queen. In the sixth season of Supergirl, James Olsen's sister Kelly Olsen (portrayed by Azie Tesfai) becomes the new Guardian. Film A character inspired by Guardian named Colonel Nathan Hardy appears in Man of Steel, portrayed by Christopher Meloni. He is a member of the United States Air Force who goes by the call sign "Guardian". Miscellaneous The Mal Duncan incarnation of Guardian makes non-speaking appearances in DC Super Hero Girls as a student of Super Hero High. References External links Guardian profile at The Unofficial Guide to the DC Universe Golden Age superheroes Comics characters introduced in 1942 Fictional American police officers Fictional shield fighters Characters created by Jack Kirby Characters created by Joe Simon DC Comics characters with accelerated healing Vigilante characters in comics