(W) J. M. DeMatteis, Bruce Timm (A) Thony Silas (CA) Gene Ha. Prequel to the DC Universe movie Justice League: Gods & Monsters! He calls himself Imperiex, the final step in humanity's evolution, and his first order of business is annihilating Superman, Batman, and Wonder Woman. Will these three headstrong heroes learn to work together?or will the Justice League's first mission be its last?