| Characters |
Justice League of America [JLA; Red Tornado [John Smith] (origin); Superman [Clark Kent]; Batman [Bruce Wayne]; Wonder Woman [Diana Prince]; Black Canary (Earth-1); The Flash [Barry Allen]; Hawkman [Katar Hol]; Green Lantern [John Stewart]; Elongated Man [Ralph Dibny] (cameo, flashback); Aquaman [Arthur Curry] (cameo, flashback); Green Arrow (Earth-1, cameo, flashback); The Atom [Ray Palmer] (cameo, flashback)]; Lana Lang; Professor T.O. Morrow (cameo, flashback); Justice Society of America [Starman [Ted Knight]; Dr. Fate [Kent Nelson]; The Flash [Jay Garrick]; Black Canary (Earth-2)] (cameo, flashback); The Construct (villain, origin); Kathy Sutton; Traya Sutton; Robot-Killer (cameo, flashback); Poison Ivy (cameo, flashback); Mirror Master (cameo, flashback); Scarecrow (cameo, flashback); Chronos (cameo, flashback) |