| 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 |
| 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 |
| Cameron Monaghan | Jeremiah Valeska |
| David W. Thompson | Jonathan Crane /
Scarecrow |
| Shiva Kalaiselvan | Lelia |
| Peter McRobbie | Mayor Pritchard |
| J.W. Cortes | Detective Alvarez
(as JW Cortes) |
| Kelcy Griffin | Harper |
| Krista Braun | Jennifer Luree |
| Christian Rozakis | Jongleur
(as Christian Alexander Rozakis) |
| Carla Occhiogrosso | Cop #2 |
| Ryan Jordan McCarthy | Cop #1 |
| Lauren Aparicio | Detective
(uncredited) |
| Jack Hammel | Dr. Tompkins Goon
(uncredited) |
| Allison Lahikainen | Cultist
(uncredited) |
| Billy Peck | Strike Force Captain
(uncredited) |
| Kara Rosella | Cultist
(uncredited) |
| Stuart Schnitzer | Core Desk Sergeant
(uncredited) |
| Kelly P. Williams | Gotham City Police
(uncredited) |