Booster Gold

A superhero with a shady origin of claiming to be from the distant future, Booster Gold always tries to work his way into the spotlight through his numerous commercials, superhero work, and other such publicity stunts.

History
Michael Jon Carter first publicly appeared in his superhero identity of Booster Gold alongside his robotic partner Skeets in Metropolis. One of his earliest actions that garnered superhero fame for him was when he rescued Superman from the Kryptonite-weilding Lex Luthor. This event specifically started Superman's interest in scouting out Booster as a potential member of the Justice League.

While Bizarro was first going around Metropolis pretending to be Superman, Booster appeared on the scene to figure out what was going on. He played an important part in Superman's plan to get Bizarro to realize he wasn't Superman by pretending to be a villain to bait out Bizarro. Superman and Lois Lane were eventually able to convince Bizarro of who/what he really was, but of course not before Bizarro pummeled Booster a bit for his "villainous" deeds.

The current Superboy tried to convince Booster to give him his time machine so he could allegedly go back in time and prevent the death of Captain Marvel that he felt so guilty for. Booster finally gave him the broken parts and was going to let him do it, but Wonder Woman and Firestorm caught onto what was happening and attempted to stop Superboy. Wonder Woman tried to convince Superboy that the potential effects could be too great, and she then destroyed the reconstructed time machine.

Later, Booster was finally invited to join the Justice League, much to the chagrin of several members who viewed him as nothing more than a publicity whore. He has, however, proven to be a competent member of the Justice League, bravely serving in dangerous missions including the operation headed by the Atom  to prevent Wayne's Pizza from closing down.