| Ben McKenzie | James Gordon |
| Donal Logue | Harvey Bullock |
| David Mazouz | Bruce Wayne |
| Morena Baccarin | Leslie Thompkins |
| Sean Pertwee | Alfred Pennyworth |
| Robin Lord Taylor | Oswald Cobblepot /
Penguin
(credit only) |
| Erin Richards | Barbara Kean |
| Camren Bicondova | Selina Kyle |
| Cory Michael Smith | Edward Nygma /
The Riddler |
| Jessica Lucas | Tabitha Galavan |
| Chris Chalk | Lucius Fox |
| Drew Powell | Solomon Grundy |
| Crystal Reed | Sofia Falcone
(credit only) |
| Alexander Siddig | Ra's al Ghul
(credit only) |
| Peyton List | Ivy Pepper |
| Chris Perfetti | Cosmo Krank |
| Caissie Levy | Tiffany Gale |
| Lacretta | Madame |
| Brian J. Carter | Coroner |
| Krista Braun | Jennifer Luree |
| Kelcy Griffin | Harper |
| Joe Avellar | TV News Anchor |
| Thomas Lyons | Griffin Krank |
| Matthew C. Flynn | Gil Rooney |
| Andrew Kaempfer | Construction Worker |
| Edward Carnevale | Criminal #1 |
| Anthony Aguilar | Criminal #2 |
| Colin Chapin | Tweaker #1 |
| Anjuli Sanneman | Tweaker #2 |
| Jack James Busa | Tweaker #3
(as John James Busa) |
| Kyle Paul | Pool Guy |
| Joseph Bearese | Man #1 |
| Adrian Matilla | Man #2 |
| Virginia Wing | Old Lady |
| Jamie Effros | Husband |
| Emerald Rose Sullivan | Wife |
| Larry Chan | Bucket Boy
(uncredited) |
| Dante Jayce | The Lowlife Biker
(uncredited) |
| Kevin D. McGee | GCPD Officer
(uncredited) |
| Mike Scerbo | Restaurant Maitre'd
(uncredited) |
| Stuart Schnitzer | Core Desk Sergeant
(uncredited) |
| Kelly P. Williams | Gotham City Police
(uncredited) |