The complete main cast and crew rundown for the Batman: The Long Halloween, Part One animated feature, as listed in the official credits for the DC Universe Movie title, are as follows below.
Warner Bros. Animation presents Batman: The Long Halloween, Part One
In Memory of Naya Rivera (1987 – 2020)
Jensen Ackles as Batman/Bruce Wayne
Josh Duhamel as Harvey Dent
Naya Rivera as Catwoman/Selina Kyle
Troy Baker as Joker
Bully Burke as Commissioner Gordon
Frances Callier as Nurse Tamara
Greg Chun – Mickey Chen
David Dastmalchian as Calendar Man
Alastair Duncan – Alfred
Gary Leroi Gray as Pearce
Amy Landecker as Barbara Gordon
Julie Nathanson as Gilda
Jim Pirri as Sal Maroni
Jack Quaid as Alberto
Fred Tatasciore as Solomon Grundy
Titus Welliver as Carmine Falcone
Directed by Chris Palmer
Written by Tim Sheridan
Based on Characters from DC and the graphic novel Batman: The Long Halloween by Jeph Loeb and Tim Sale
Executive Producer – Sam Register
Executive Producer – Michael Uslan
Producer – Jim Krieg
Producer – Kimberly S. Moreau
Supervising Producer – Butch Lukic
Music by Michael Gatt
Editor – Bruce A. King
Casting and Voice Direction – Wes Gleason
Animation Services – Maven Image Platform, Edge Animation Co., Studio Grida
Character Design Supervisor – Jon Suzuki
Character Design – Cathlin Hildalgo-Polvani, Dou Hong, Irineo Maramba, Otto Schmidt
Storyboard Artists – Adrian Barrios, Ethan Becker, Gabo Camarillo Gil, Tim Divar, Elsa Garagarza, Vinton Heuck, Eugene Lee, David Maximo, Sam Montes, Albert Park, Sung Shin, Bob Smith, Carli Squitieri, J. Andres Velasco, Rozlynn Waltz, Jeff Wamester