Batman [Terry McGinnis]; Bruce Wayne; Ace (a dog); Boom-Boom (a dog); Dana Tan; Maxine Gibson; Alexei (villain); Boris (villain); Mad Stan (villain); Mikhail (villain)
Justice League [Aquagirl [Marina]; Barda; Batman [Terry McGinnis]; Green Lantern [Kai-Ro]; Micron; Superman [Clark Kent; Kal-El]; Warhawk [Rex Stewart]]; Amanda Waller; Aquaman [Arthur Curry]; Challengers of the Unknown [Ace Morgan (cameo flashback); Professor Haley (cameo flashback); Red Ryan (cameo flashback); Rocky Davis (cameo flashback); June Robbins (death)]; Forever People [Big Bear; Mark Moonrider; Serifan; Vykin the Black] (cameo flashback); Kamandi (cameo flashback); O.M.A.C. (cameo flashback); Kobra (villains); Lex Luthor (villain)