| Cast list |
| David Duchovny | as | Fox Mulder (voice) |
| Gillian Anderson | as | Dana Scully (voice) |
| William B. Davis | as | Cigarette Smoking Man/CGB Spender (voice) |
| Mitch Pileggi | as | A.D. Walter Skinner (voice) |
| Tom Braidwood | as | Melvin Frohike (voice) |
| Dean Haglund | as | Richard 'Ringo' Langly (voice) |
| Bruce Harwood | as | John Byers (voice) |
| James Pickens Jr. | as | Alvin Kersh (voice) |
| Bill Dow | as | Charles Burks (voice) |
| Arlene Warren | as | Skinner's Assistant (voice) (as Arlene Pileggi) |
| Mary Astadourian | as | Additional Voices (voice) |
| Maya Blume | as | Additional Voices (voice) |
| Ben Borth | as | Additional Voices (voice) |
| Brad Follmer | as | Additional Voices (voice) |
| Joel Kleinberg | as | Additional Voices (voice) |
