Jimmy's story in the 2007–08 weekly series "Countdown to Final Crisis" begins with an investigation into the death of Duela Dent. Tying into the "Death of the New Gods" storyline, Jimmy starts to develop many superpowers, which he first discovers when he is attacked by Killer Croc while gathering information on Duela's death. As the story progresses he tries to uncover the origin of these powers and starts to discover their potential limitlessness in stories which mimic the Silver Age "Superman's Pal Jimmy Olsen" adventures. Briefly operating as the superhero Mr. Action, Jimmy is unable to command the respect of established superheroes in the Justice League and Teen Titans. He gives up on this particular avenue. One of these powers allows Jimmy to realize the identities of some superheroes, such as Robin and Superman, who requests that he take care of Krypto.