Character
Harley Quinn (Harleen Quinzel) Cameo, Roger Elliot Flashback, hush (Thomas Elliot) (Origin, Villain), Villain, Also As Lefty Knox, hush (Thomas Elliot) (Villain), hush (Thomas Elliot) Origin, Batman (Bruce Wayne), Justice Society of America JSA, Cameo, Poison Ivy (Pamela Isley) Cameo, Officer Levin, Joker Flashback, Peyton Riley Flashback, hush (Thomas Elliot), Riddler (Edward Nigma) Flashback, Zatanna, Tweedledum (Dumson Tweed), Oracle (Barbara Gordon), Harley Quinn (Harleen Quinzel) Flashback, Mr. Freeze (Victor Fries) Flashback, The Wonderland Gang Tweedledee (Deever Tweed), James Gordon, Marla Elliot Flashback, Dr. Mid-Nite (Pieter Cross), Scarecrow (Jonathan Crane) (Villain), Mr. Terrific (Michael Holt), Alfred Pennyworth, Catwoman, Death, Penguin (Oswald Cobblepot) Cameo, Peyton Riley (Flashback), Robin (Tim Drake), Oracle (Barbara Gordon) (Cameo), Milt, Nurse Margaret, Colin, Poison Ivy (Pamela Isley) Flashback, Thomas Wayne (Flashback), The Carpenter (Jenna Duffy) (Villains), Death?, Dr. Aesop First Appearance, Selina Kyle (Catwoman), Justice Society of America Mr. Terrific (Michael Holt), Marla Elliot (Flashback), The Walrus (Moe Blum), Mr. Prescott Flashback, Nightwing (Dick Grayson), Joker (Villain), Slam Bradley (Cameo)
