| Steven Strait | Jim Holden |
| Cas Anvar | Alex Kamal |
| Dominique Tipper | Naomi Nagata |
| Wes Chatham | Amos Burton |
| Frankie Adams | Roberta 'Bobbie' W. Draper |
| Cara Gee | Camina Drummer |
| Nadine Nicole | Clarissa Mao |
| Keon Alexander | Marco Inaros |
| Jasai Chase Owens | Filip |
| Shohreh Aghdashloo | Chrisjen Avasarala |
| José Zúñiga | Bull - Tycho Chief of Ops |
| Michael Irby | UN Admiral Delgado |
| Brent Sexton | Cyn |
| Anna Hopkins | Monica Stuart |
| Bahia Watson | Sakai - Tycho Chief Engineer |
| George Tchortov | Leveau |
| Olunike Adeliyi | Karal |
| Natalie Brown | Rona |
| Arnold Pinnock | Morris |
| Thomas Mitchell | Sullivan |
| Chad L. Coleman | Fred Johnson |
| Boomer Phillips | Konecheck |
| Carlos Pinder | UN Army Officer |
| Christopher Charles | Luna Staffer |
| Evan Sabba | UNN Officer |
| Lily Gao | Nancy Gao |
| Peter D'Souza | Mech Bot Movement Double |
| Rheal Rees | Luna Staffer |
| Ronn Sarosiak | Chef Casey |
| Ryan Hollyman | UN Chief of Staff |
| Stephen Chambers | UN Prison Desk Guard |
| Moses Nyarko | Belter Dock Worker #1 |
| Bernadette Couture | Belter Dock Worker #2 |