The Justice League was founded after the Imperium invasion by the seven heroes who responded to the crisis. The team was reformed after the Thanagarian invasion into the Justice League Unlimited. The team was originally headquartered in the Watchtower I, and after its destruction has given the same name to all of their subsequent bases.
Gallery
he founding members of the Justice League: (from left to right) J'onn J'onzz, Hawkgirl, John Stewart, Wonder Woman, Flash, Superman, and Batman
From their outpost orbiting the Earth, the Justice League vigilantly guarded against threats
The expanded Justice League