Justice League Unlimited — DC Comics
Issue: #19
AT THE DAWN OF A NEW ERA... IS A SURPRISE RETURN! As the Leaguers struggle on Earth to fulfill the impossible missions mandated by the Heart of Apokolips and control the villains given amnesty, the space-faring JLU members come face-to-face with Brainiac Queen — back from the pages of Absolute Power and deadlier than ever!
Creators: Mark Waid, Dan Mora, Tamra Bonvillain, Ariana Maher, Marquis D. Draper, Paul Kaminski, Marie Javins
Characters: Batman, Lex Luthor, Black Lightning, Brainiac Queen, Captain Atom, Billy Batson, Dr. Polaris (Emerson), Wally West, Jack Ryder, Jarro, James Gordon, Livewire, Wonder Woman, Kon-El, Red Tornado, Harley Quinn, Guy Gardner, Ryan Choi, Metamorpho, Donna Troy