Stała obsada sezonu 4

1. 

   David Duchovny

   Fox Mulder

2. 

   Gillian Anderson

   Dana Scully

3. 

   Robert Patrick

   John Doggett

4. 

   Annabeth Gish

   Monica Reyes

Goście specjalni 18

1. 

   Mitch Pileggi

   Walter Skinner

2. 

   Cary Elwes

   Brad Follmer

3. 

   Denis Forest

   Lone Man

4. 

   Neal McDonough

   Robert Comer

5. James Riker

   Baby William

6. Travis Riker

   Baby William

7. 

   James Parks

   Agent Terry Sullivan

8. 

   McNally Sagal

   Overcoat Woman

9. 

   Alan Dale

   Toothpick Man

10. Joe Colligan

    Driver Agent

11. Brian Catalano

    Passenger Agent

12. 

    Randy Hall

    U-Haul Driver

13. Laura Leigh Hughs

    Kersh's Assistant

14. 

    James Pickens Jr.

    Alvin Kersh

15. 

    Sheila Larken

    Margaret Scully

16. 

    Bruce Harwood

    John Fitzgerald Byers

17. 

    Dean Haglund

    Richard 'Ringo' Langly

18. 

    Tom Braidwood

    Melvin Frohike

Ekipa 3