| David Duchovny | Fox Mulder |
| Gillian Anderson | Dana Scully |
| Jerry Hardin | Deep Throat |
| Michael Bryan French | Paul Mossinger |
| Seth Green | Emil |
| Gabrielle Rose | Anita Budahas |
| Monica Parker | Ladonna |
| Sheila Moore | Verla McLennen |
| Lalainia Lindbjerg | Zoe |
| Andrew Johnston | Lt. Col. Robert Budahas |
| Johnny Cuthbert | Commanding Officer
(as Jon Cuthbert) |
| Vince Metcalfe | Kissell |
| Michael Puttonen | Motel Manager |
| Brian Furlong | Lead Officer |
| Doc Harris | Mr. McLennen |
| Carrie Classen | Leslie Budahas
(uncredited) |
| Mark Kandborg | Area 51 Worker
(uncredited) |
| Steve Makaj | Man in Black
(uncredited) |
| Tony Morelli | Man in Black
(uncredited) |
| Cody Serpa | Josh Budahas
(uncredited) |
| Bob Wilde | Man in Black
(uncredited) |