| Ben McKenzie | James Gordon |
| Donal Logue | Harvey Bullock |
| David Mazouz | Bruce Wayne
(credit only) |
| Zabryna Guevara | Sarah Essen |
| Sean Pertwee | Alfred Pennyworth
(credit only) |
| Robin Lord Taylor | Oswald Cobblepot /
Penguin |
| Erin Richards | Barbara Kean |
| Camren Bicondova | Selina Kyle
(credit only) |
| Cory Michael Smith | Edward Nygma |
| Victoria Cartagena | Renee Montoya
(credit only) |
| Andrew Stewart-Jones | Crispus Allen
(credit only) |
| John Doman | Carmine Falcone |
| Jada Pinkett Smith | Fish Mooney |
| David Zayas | Sal Maroni |
| Drew Powell | Butch Gilzean |
| Anthony Carrigan | Victor Zsasz |
| Makenzie Leigh | Liza |
| Morena Baccarin | Leslie Thompkins |
| Christopher Heyerdahl | Jack Gruber |
| Peter Scolari | Commissioner Loeb |
| Kevin McCormick | Aaron Danzig |
| Adrian Martinez | Irwin |
| Victor Cruz | Desk Sergeant |
| Caroline Lagerfelt | Mrs. Kean |
| Richard Poe | Mr. Kean |
| Dash Mihok | Detective Arnold Flass |
| Chelsea Spack | Kristen Kringle |
| J.W. Cortes | Detective Alvarez
(as JW Cortes) |
| Alex Corrado | Gabe |
| Filipe Valle Costa | Cop |
| Christine Hollingsworth | Zsasz Henchwoman #1 |
| Celia Au | Zsasz Henchwoman #2 |
| Giovanni Roselli | Mobster |
| Eli Bridges | Screaming Junkie |
| Joe Remy Dolinsky | Fruit Store Owner
(uncredited) |
| Christine Duke | Prostitute
(uncredited) |
| Preston Foye | Medic
(uncredited) |
| Nick Hentsch | Nightcrawler
(uncredited) |
| Hans Marrero | Narco Cop
(uncredited) |
| John Mitchell | Waiter at Maronis
(uncredited) |
| Rich Mollo | Henchman
(uncredited) |
| Jonathan O'Reilly | Young Carmine Falcone
(uncredited) |
| Mirla Pereira | Police Officer
(uncredited) |
| Stuart Schnitzer | Core Desk Sergeant
(uncredited) |
| Chris Slone | Uncle Falcone
(uncredited) |