Booster Gold, whose real name is Michael Jon Carter, is a superhero created by Dan Jurgens who first appeared in Booster Gold #1 in February 1986, marking him as the first significant new character introduced into the DC Universe following the events of Crisis on Infinite Earths. Originating from the 25th century, Carter was a talented college football star nicknamed "Booster" whose career ended in disgrace after he was caught gambling on games, often to support his family's needs. Disillusioned, he took a job as a night watchman at the Metropolis Space Museum, where he stole advanced artifacts—including a force-field belt, a Legion flight ring, a power suit, and the security robot Skeets—along with Rip Hunter's time sphere to travel back to the 20th century, intent on using his knowledge of historical events and futuristic technology to become a famous and wealthy superhero.
Initially portrayed as a glory-seeking showboat operating in Metropolis, Booster staged high-profile heroics and capitalized on endorsements, inadvertently naming himself "Booster Gold" during a nervous public debut while saving the President. He joined the Justice League International, forming a close friendship with Blue Beetle (Ted Kord) amid the team's comedic adventures, though his self-promoting antics often cast him as comic relief. Over time, personal hardships reshaped his character, particularly after severe injuries from battles like the one against Doomsday during The Death of Superman storyline, which sidelined him and highlighted his underlying bravery.
A pivotal turning point came with the death of his best friend Ted Kord in Countdown to Infinite Crisis, followed by Booster's central role in the 52 series, where apparent failures and a staged downfall masked his secret efforts to avert multiversal threats. In his 2007-2011 solo series, Booster emerged as a clandestine protector of the timeline under Rip Hunter's guidance—later revealed as his son—deliberately maintaining a reputation as an inept fame-seeker to conceal his critical interventions across history. This evolution transformed him from a superficial opportunist into a profoundly dedicated hero burdened by unseen sacrifices, often operating as the "greatest hero you've never heard of" while safeguarding the multiverse.