| 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 |
| Chris Chalk | Lucius Fox |
| Cameron Monaghan | Jeremiah Valeska |
| Jaime Murray | Theresa Walker |
| J.W. Cortes | Detective Alvarez
(as JW Cortes) |
| Sarah Schenkkan | Magpie |
| David Carranza | Angel Vallelunga |
| Shane West | Eduardo Dorrance |
| Luke Lesko | Delta #1 |
| Calvin Ahn | Delta #2 |
| Kevin D. McGee | GCPD Officer
(uncredited) |
| Alexander Spitfire | Lo Boyz Gangster
(uncredited) |
| Kelly P. Williams | Gotham City Police
(uncredited) |