Justin Copeland Director Jason O'Mara Bruce Wayne , Batman Voice Jennifer Morrison Selina Kyle , Catwoman Voice Jerry O'Connell Kal-El , Clark Kent , Superman Voice Rebecca Romijn Lois Lane Voice Rainn Wilson Lex Luthor Voice Sean Maher Dick Grayson , Nightwing Voice Peyton List Barbara Gordon , Batgirl Voice Bruce Thomas James Gordon Voice Stuart Allan Damian Wayne , Robin Voice James Garrett Alfred Pennyworth Voice Maury Sterling Thomas Elliot , Hush Voice Geoffrey Arend Edward Nygma , Riddler Voice Peyton List Poison Ivy , Pamela Isley Voice Vanessa Williams Amanda Waller Voice Hynden Walch Harley Quinn Voice Jason Spisak Joker Voice Tara Strong Reporter Voice Ernie Altbacker Screenwriter Amy McKenna Producer Benjamin Melniker Executive Producer Sam Register Executive Producer Michael E. Uslan Executive Producer James Tucker Executive Producer Frederik Wiedmann Music