Jay Oliva Director Peter Weller Batman , Bruce Wayne Voice Ariel Winter Robin , Carrie Kelley Voice David Selby Commissioner Gordon Voice Paget Brewster Lana Lang Voice Michael Emerson Joker Voice Mark Valley Clark Kent , Superman Voice Dee Bradley Baker Don Voice Michael McKean Dr. Bartholomew Wolper Voice Conan O'Brien David Endocrine Voice Robin Atkin Downes Oliver Queen Voice Bob Goodman Screenwriter Alan Burnett Producer Benjamin Melniker Executive Producer Sam Register Executive Producer Bruce Timm Executive Producer Michael E. Uslan Executive Producer Christopher Drake Original Music Christopher D. Lozinski Film Editing Meredith Layne Casting