| Stephen Amell | Oliver Queen /
The Arrow |
| Katie Cassidy | Laurel Lance |
| David Ramsey | John Diggle |
| Willa Holland | Thea Queen |
| Emily Bett Rickards | Felicity Smoak |
| Colton Haynes | Roy Harper |
| Manu Bennett | Slade Wilson |
| Susanna Thompson | Moira Queen |
| Paul Blackthorne | Quentin Lance |
| Grant Gustin | Barry Allen |
| Kevin Alejandro | Sebastian Blood /
Brother Blood |
| Celina Jade | Shado |
| Caity Lotz | Sara Lance |
| Roger Cross | Detective Lucas Hilton |
| Bex Taylor-Klaus | Sin |
| Jesse Hutch | Officer Daily |
| Dylan Neal | Dr. Anthony Ivo |
| Graham Shiels | Cyrus Gold |
| Colin Donnell | Tommy Merlyn |
| Olivia Cheng | Linda Park |
| Jennifer Cheon Garcia | Officer Jones
(as Jennifer Cheon) |
| Danny Dworkis | The Technician |
| Ron Selmour | The Butcher
(as Ronald Selmour) |
| Christian Michael Cooper | Orphan
(uncredited) |
| Charles Jarman | Pirate
(uncredited) |
| Jeremy Raymond | Sleazy Clerk
(uncredited) |