James “Jimmy” Olsen is the best friend of Clark Kent and Winn Schott, the ex-boyfriend/good friend of Kara Danvers and the ex-boyfriend of Lena Luthor. Originally a photojournalist of the Daily Planet, James became the art director of CatCo Worldwide Media in National City, where he helped Kara with her heroism. He was later promoted to CEO of CatCo by Cat Grant when she took a leave of absence from the company. Always longing for his own brand of justice, James, with the help of Winn, adopted the guise of Guardian, a vigilante operating in the city.
After revealing his identity during Reign’s terraformation of Earth, James soon became a deputized superhero of the National City Police Department. James resigned from CatCo when its new owner, Andrea Rojas, started diminishing the importance of journalism. He moved back to Calvintown and used a loophole in the contract that kept him from being a reporter to purchase the local newspaper, The Calvintown Gazette, and become its publisher. James now uses the paper to fight against the town’s corrupt justice system.