Superman [Clark Kent; Kal-El] (cameo); Power Girl [Kara] (cameo); Supergirl [Kara Zor-El] (cameo); Green Lantern [Hal Jordan]; Justice Society of America [Atom Smasher [Al Rothstein]; Cyclone [Maxine Hunkel]; Flash [Jay Garrick]; Hawkman [Carter Hall]; Hourman [Rick Tyler]; Liberty Belle [Jesse Chambers]] (cameo); Freedom Fighters [Black Condor [John Trujillo]; Miss America [Joan Dale]; The Ray [Ray Terrill]; Red Bee [Jenna Raleigh]; Uncle Sam] (cameo); Zatanna Zatara; Mary Marvel [Mary Batson]; Karate Kid [Val Armorr]; Una [Luornu Durgo]; Oracle [Barbara Gordon]; Question [Renee Montoya]; Batwoman [Kate Kane]; Monitors; Slig; Robin [Tim Drake]; Mr. Action [Jimmy Olsen]; Pied Piper [Hartley Rathaway] (villain); Trickster [James Jesse] (villain); Calculator [Noah Kuttler] (villain); Darkseid (villain, cameo); Eclipso [Jean Loring] (villain)
Synopsis
Zatanna and Mary Marvel go up against a mysterious force, Oracle battles the Calculator, the Question and Batwoman interrogate Trickster and Pied Piper and Mr. Action tries to join the Teen Titans.