| Patrick Stewart | Capt. Jean-Luc Picard |
| Jonathan Frakes | Cmdr. William Riker |
| LeVar Burton | Lt. Geordi La Forge |
| Denise Crosby | Lt. Tasha Yar |
| Michael Dorn | Lt. Worf |
| Gates McFadden | Dr. Beverly Crusher |
| Marina Sirtis | Counselor Deanna Troi |
| Brent Spiner | Lt. Cmdr. Data |
| Wil Wheaton | Wesley Crusher |
| John de Lancie | Q |
| Michael Bell | Zorn |
| DeForest Kelley | Adm. Leonard McCoy |
| Colm Meaney | Battle Bridge Conn |
| Cary-Hiroyuki Tagawa | Mandarin Bailiff
(as Cary-Hiroyuki) |
| Tim Dang | Main Bridge Security
(as Timothy Dang) |
| David Erskine | Bandi Shopkeeper |
| Evelyn Guerrero | Young Female Ensign |
| Chuck Hicks | Military Officer |
| Jimmy Ortega | Torres |
| Michael Bailous | Enterprise-D Officer
(uncredited) |
| James G. Becker | Youngblood
(uncredited) |
| Robert Vernon Biggs | Trial Gallery Member
(uncredited) |
| Darrell Burris | Operations Division Officer
(uncredited) |
| Dexter Clay | Security Chief
(uncredited) |
| Jeffrey Deacon | Command Division Officer
(uncredited) |
| Susan Duchow | Operations Division Officer
(uncredited) |
| Kelly Gallant | Post-Atomic Horror Trial Spectator
(uncredited) |
| Joe Gieb | Post-Atomic Horror Bell Ringer
(uncredited) |
| Nora Leonhardt | Science Division Ensign
(uncredited) |
| David B. Levinson | Post-Atomic Horror Trial Spectator
(uncredited) |
| Daryl F. Mallett | Person in Marketplace
(uncredited) |
| Tim McCormack | Ensign Bennett
(uncredited) |
| Lorine Mendell | Crewman Diana Giddings
(uncredited) |
| Brad Phillips | Longo
(uncredited) |
| Andrew Probert | Post-Atomic Horror Trial Spectator
(uncredited) |
| Larry Robb | Bandi Citizen
(uncredited) |
| Richard Sarstedt | Command Division Officer
(uncredited) |
| Martin Valinsky | 21st Century Soldier
(uncredited) |