Justice League(1459)

The Justice League is One of the Earth's most powerful and premier superhero team. A strike force comprised of the Earths mightiest heroes. They act as stalwart protectors of sentient life; Earth's first line of defense against terrestrial, extra-terrestrial, inter-dimensional and supernatural threats. There have been many members over the years and several incarnations of the team, but the original group was founded by Aquaman, Batman, Flash, Green Lantern, Martian Manhunter, Superman, and Wonder Woman.

Origins
The first unofficial gathering of the group that would form the JLA happened when White Martians attempted to invade the Earth, prompting the then-fledgling hero Flash into bringing together Martian Manhunter, Superman, Batman, Robin, Wonder Woman, This collection of heroes staved the Martian invasion, and while the group did not officially form at this time, it was later realized after the case was reviewed years later by the Green Arrow that all the founding members, including Hal Jordan (who at the time had yet to become Earth's Green Lantern) were present.

The official formation of the Justice League began when Earth was invaded by Appellaxian warriors sent to the planet to see who could conquer Earth first, as a means of determining who would become the new ruler of their home planet. Each alien warrior possessed a different power or ability, and attacked a different portion of Earth, which drew the individual attention of the Flash (Barry Allen), Green Lantern (Hal Jordan), Wonder Woman (Diana Prince), Aquaman and the Martian Manhunter. While most of the Appellaxian invaders were defeated by the superheroes individually, the heroes themselves fell prey one by one to a single competitor's attack; they soon discovered that only by working together could they defeat the competitor. Superman and Batman joined them in defeating the remaining Appellaxians. Afterwards, the group decided that they should form a permanent organization to confront menaces that required a similar pooling of resources, and dubbed themselves the Justice League.

In their first recorded adventure Justice League recruited both Superman and Batman into their ranks and set up a secret base just outside of Happy Harbor. Their earliest battle was when Happy Harbor was invaded by Starro the Conqueror a gigantic space alien shaped like a starfish that could control the minds of people with miniature duplicates. Aquaman, Flash, Green Lantern, Wonder Woman and the Martian Manhunter answered the call to help. When they find that Happy Harbor resident Lucas "Snapper" Carr was not taken over by Starro due to the lime solution that was spread on Snapper's lawn, the Justice League easily defeated Starro.