Immortal Man, also known as Klarn Arg, is a superhero in the DC Comics Universe. He first appeared in Strange Adventures #177 (June 1965). Multiple versions of his origin connect him to the villain Vandal Savage, with both gaining immortality by encountering a strange meteorite during prehistoric times. Immortal Man was also a founding member of The Forgotten Heroes. In the 2018 comic book series The Immortal Men, Klarn's title "Immortal Man" is passed on to teenager Caden Park.