Character
King Markov (Flashback), Tara Markov (Villain), Clayface (Basil Karlo) (Villain), Mr. Freeze (Victor Fries) (Villain), Batman (Dick Grayson) (Cameo), Black Lantern (Reiko Yamashiro) (Villain), Kory Anders (Cameo), Man-Bat, Cyborg (Victor Stone) (Cameo), Owlman (Roy Raymond, Jr.), Starfire Koriand'r, Metamorpho (Rex Mason), Alfred Pennyworth, Mrs. Brosky, Nurse Overbye, Nightwing (Dick Grayson) (Cameo), Black Lantern Terra, Robin (Damian Wayne) (Cameo), Black Lantern (Yuki Yamashiro) (Villain), Katana, Teen Titans Changeling (Gar Logan) (Cameo), Killer Croc (Waylon Jones) (Villain), Deathstroke (Slade Wilson) Cameo, Black Lantern (Maseo Yamashiro) (Villain), Halo (Violet Harper), Geo-Force (Brion Markov), Creeper (Jack Ryder), Villain, Stephen Brosky, Mr. Freeze (Victor Fries) Cameo, Clayface (Basil Karlo) Cameo, Outsiders Black Lightning (Jefferson Pierce)