| Stephen Amell | Oliver Queen / Green Arrow |
| David Ramsey | John Diggle / Spartan |
| Katie Cassidy | Laurel Lance / Black Canary |
| Rick Gonzalez | Rene Ramirez / Wild Dog |
| Katherine McNamara | Mia Smoak / Blackstar |
| Juliana Harkavy | Dinah Drake / Black Canary |
| Joseph David-Jones | Connor Hawke |
| Ben Lewis | Adult William Clayton |
| Colton Haynes | Roy Harper / Arsenal |
| Kirk Acevedo | Ricardo Diaz |
| Audrey Marie Anderson | Lyla Michaels |
| Sydelle Noel | Samanda Watson |
| David Bloom | FBI Boss |
| Jon Bryant | Prisoner #2 |
| Shayne Elliott | Sentry Prisoner #1 |
| Matt Fentiman | Peter Tietjen |
| Marcello Guedes | JJ |
| Natalie Harris | Sofie |
| Hector Johnson | Prisoner #1 |
| Frances Leigh | Nanny |
| Leanne Khol Young | CDC Security Officer |
| Cody Runnels | Derek Sampson |
| Vinnie Jones | Danny 'Brick' Brickwell |
| Holly Dignard | Red Dart |
| Miranda Edwards | Silencer |
| Tim Howe | Dunbar |
| Michael Jai White | Ben Turner |
| Michael Jonsson | Kodiak |
| Brendan Fletcher | Stanley Dover |