The Justice League was conceived by writer Gardner Fox during the Silver Age of Comic Books as a reimagining of the Golden Age's Justice Society of America. Originally consisting of Superman, Batman, Wonder Woman, The Flash, Green Lantern, Aquaman, and the Martian Manhunter, they first appeared together as the Justice League of America (JLA) in The Brave and the Bold #28 (March 1960).
The Justice League's roster has rotated throughout the years, consisting of various superheroes from the DC Universe, such as The Atom, Big Barda, Black Canary, Black Lightning, Captain Marvel/Shazam, Cyborg, Green Arrow, Elongated Man, The Flash, Green Lantern, Hawkgirl, Hawkman, Metamorpho, Plastic Man, Power Girl, Orion, Red Tornado, Stargirl, and Zatanna. In The New 52 reboot, Cyborg replaced the Martian Manhunter as one of the seven founding members.
The team received its own comic book title called Justice League of America in November 1960. With The New 52 in 2011, DC Comics released a second volume of Justice League. In July 2016, the DC Rebirth initiative again relaunched the Justice League comic book titles with the third volume of Justice League. Since its inception, the team has been featured in various films, television programs, and video games.