| Ben McKenzie | James Gordon |
| Donal Logue | Harvey Bullock |
| David Mazouz | Bruce Wayne |
| Zabryna Guevara | Sarah Essen |
| Sean Pertwee | Alfred Pennyworth |
| Robin Lord Taylor | Oswald Cobblepot /
Penguin |
| Erin Richards | Barbara Kean |
| Camren Bicondova | Selina Kyle |
| Cory Michael Smith | Edward Nygma |
| Victoria Cartagena | Renee Montoya |
| Andrew Stewart-Jones | Crispus Allen |
| John Doman | Carmine Falcone
(credit only) |
| Jada Pinkett Smith | Fish Mooney |
| Nicholas D'Agosto | Harvey Dent |
| Richard Kind | Aubrey James |
| Drew Powell | Butch Gilzean |
| Makenzie Leigh | Liza |
| Al Sapienza | Dick Lovecraft |
| Leslie Odom Jr. | Ian Hargrove |
| Steve Cirbus | Gregor Kasyanov |
| Luke Forbes | John Hargrove |
| Gabriel Rush | Roy |
| Melvin Abston | Senior Corrections Officer |
| Marinda Anderson | Junior Corrections Officer |
| Andrew Ayala | Munitions Security Officer #1 |
| Guyviaud Joseph | Munitions Security Officer #2 |
| David Wayne Fox | Arkham Asylum Inmate
(uncredited) |
| Paul Kaye | Arkham Prison Inmate
(uncredited) |
| Rachael Ma | Mayor's Assistant
(uncredited) |
| Mirla Pereira | Police Officer
(uncredited) |
| Stuart Schnitzer | Core Desk Sergeant
(uncredited) |
| Justin L. Wilson | Arkham Asylum Inmate
(uncredited) |
| Maximilian Zammit | Arkham Asylum Inmate
(uncredited) |