| Ben McKenzie | James Gordon |
| Donal Logue | Harvey Bullock |
| David Mazouz | Bruce Wayne |
| Morena Baccarin | Leslie Thompkins
(credit only) |
| Sean Pertwee | Alfred Pennyworth |
| Robin Lord Taylor | Oswald Cobblepot /
Penguin
(credit only) |
| Erin Richards | Barbara Kean |
| Camren Bicondova | Selina Kyle
(credit only) |
| Cory Michael Smith | Edward Nygma
(credit only) |
| James Frain | Theo Galavan |
| Jessica Lucas | Tabitha Galavan |
| Chris Chalk | Lucius Fox |
| Drew Powell | Butch Gilzean |
| Nicholas D'Agosto | Harvey Dent
(credit only) |
| Michael Chiklis | Nathaniel Barnes |
| BD Wong | Hugo Strange |
| Tonya Pinkins | Ethel Peabody |
| Nathan Darrow | Victor Fries |
| Michelle Gomez | The Lady |
| Julia Chan | Karen Jennings
(as Julia Taylor Ross) |
| Hannah Scott | White Gloves |
| Edvin Ortega | GCPD Cop |
| Jacqueline O. Rene | Bert
(as Jacqueline O. Renè) |
| Norm Golden | Security Guard |
| Christopher Place | Hitman #1 |
| Neimah Djourabchi | Hitman #2 |
| Brett Azar | Hitman #3 |
| Guy Lockard | Thug #1 |
| Luke Darnell | Thug #2
(uncredited) |
| Stanley Krajewski | Arkham Prison Guard
(uncredited) |
| Frank Modica | GCPD CORE Detective
(uncredited) |
| Kelly P. Williams | Gotham City Police
(uncredited) |