| Patrick Stewart | Capt. Jean-Luc Picard |
| Jonathan Frakes | Cmdr. William Riker |
| LeVar Burton | Lt. Cmdr. Geordi La Forge |
| Michael Dorn | Lt. Worf |
| Gates McFadden | Dr. Beverly Crusher |
| Marina Sirtis | Counselor Deanna Troi |
| Brent Spiner | Lt. Cmdr. Data |
| Leonard Nimoy | Spock |
| Stephen Root | Capt. K'Vada |
| Malachi Throne | Senator Pardek |
| Norman Large | Proconsul Neral |
| Daniel Roebuck | Jaron |
| Billy Bastiani | Omag
(as William Bastiani) |
| Susan Fallender | Romulan |
| Denise Crosby | Sela |
| Vidal Peterson | D'Tan |
| Harriet C. Leider | Amarie
(as Harriet Leider) |
| Majel Barrett | Narrator
(voice) (uncredited) |
| Carla Beachcomber | Romulan Civilian
(uncredited) |
| Chuck Borden | Romulan Guard
(uncredited) |
| Debbie David | Ensign Russell
(uncredited) |
| Nick Dimitri | Romulan Guard
(uncredited) |
| Judi M. Durand | Amarie
(voice) (uncredited) |
| Carmen Emeterio | Romulan Civilian
(uncredited) |
| William Gocke | Man
(uncredited) |
| Linda Harcharic | Romulan Civilian
(uncredited) |
| Christi Haydon | Romulan Civilian
(uncredited) |
| Arvo Katajisto | Romulan Guard
(uncredited) |
| Mark Lentry | Romulan Civilian /
Science Division Officer
(uncredited) |
| Heather Long | Omag's Woman
(uncredited) |
| Shauna O'Brien | Omag's Woman
(uncredited) |
| Bill E. Rogers | Operations Division Officer
(uncredited) |
| Michael Scranton | Romulan Guard
(uncredited) |
| Guy Vardaman | Klingon Crewman
(uncredited) |