Fan Casting Justice League : Brainiac Invasion

This is the beginning of the Golden Age of Heroes, the one where the greatest protectors of our world united for the first time, in order to prevent the world collector, responsible for the destruction of Krypton, from doing the same with the Earth. Under the leadership of the mysterious Martian Mahunter, Superman, Batman, Wonder Woman, Flash, Green Lantern and Aquaman come together to stop Brainiac invasion, because they're the only ones who can do this !