The Justice League was created to boost the profiles and sales of said characters through cross-promotion and helped develop the DC Universe as a shared universe, as it is through teams like the Justice League that the setting's characters regularly interact with each other. The cast of the Justice League usually features a few highly popular characters who have their own solo books, such as Superman, alongside a number of lesser-known characters who benefit from exposure, such as Cyborg. This in contrast to certain other superhero teams such as the X-Men, whose characters were created specifically to be part of the team, with the team being central to their identity.

Diegetically, these superheroes usually operate independently but occasionally assemble as a team to tackle especially formidable villains. The Justice League is an all-star ensemble cast of established superhero characters from DC Comics' portfolio. The team was conceived by writer Gardner Fox as a revival of the Justice Society of America, a similar team from DC Comics from the 1940s which had been pulled out of print due to a decline in sales.

The team first appeared in The Brave and the Bold #28 (March 1960). The Justice League (also known as The Justice League of America) are a team of superheroes appearing in American comic books published by DC Comics.

The seven original members of the Justice League: Green Lantern, Flash, Superman, Batman, Wonder Woman, Aquaman and Martian Manhunter.

Writers who wrote brave characters