Justice League

The Justice League is a team of extraordinary individuals founded by Batman to work together to stop threats that none of them could withstand alone. When Darkseid was on his way to invade Earth in search of the Anti-Life Equation, Batman worked with Superman and Wonder Woman to search the world for special beings with powers and abilities to help defend the world from an imminent invasion. By the time of Darkseid's arrival, they worked together and stopped him temporarily. The team became official and they built the Watchtower. After two years of working together, the team expanded for more members.

Founding Members
Here are the original members that remained as the main and founding members of the Justice League:
 * Batman
 * Superman
 * Wonder Woman
 * Cyborg
 * Aquaman
 * Green Lantern (Hal Jordan)
 * Martian Manhunter
 * Green Lantern (John Stewart)
 * The Flash

Expanded Members
After two and a half years of fighting together, the Trinity decided that it was right to expand the Justice League. They set out to find more superheroes to help work with the League to make the universe a better place:
 * Doctor Fate
 * Zatanna
 * Shazam
 * John Constantine
 * Hawkman
 * Hawkgirl
 * Powergirl
 * The Atom
 * Nightwing
 * Green Arrow
 * Black Canary
 * Mera