| 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 |
| Willa Holland | Thea Queen |
| Paul Blackthorne | Quentin Lance |
| Caity Lotz | Sara Lance |
| Colton Haynes | Roy Harper / Arsenal |
| Joe Dinicol | Rory Regan / Ragman |
| Kirk Acevedo | Ricardo Diaz |
| Jessica Heafey | Documentarian |
| Joseph David-Jones | Connor Hawke / Green Arrow |
| Sea Shimooka | Emiko Queen / Green Arrow |
| Bex Taylor-Klaus | Sin |
| Venus Terzo | Dr. Schwartz |
| Laara Sadiq | Mayor Emily Pollard |
| Evan Roderick | Nick Anastas |
| Eliza Faria | Zoe Ramirez |
| Grant Gustin | Barry Allen / The Flash |
| Jack Moore | William |
| Katherine McNamara | Mia Smoak |