David Duchovny FBI Special Agent Fox Mulder Actor Gillian Anderson FBI Special Agent Dana Scully Actor Robert Patrick John Doggett Actor Mitch Pileggi Asst. Dir. Walter Skinner Actor Annabeth Gish Monica Reyes Guest Star Nicholas Lea Alex Krycek Guest Star Kirk B.R. Woller Agent Gene Crane Guest Star James Pickens Jr. Alvin Kersh Guest Star Tom Braidwood Melvin Frohike Guest Star Dean Haglund Richard "Ringo" Langly Guest Star Bruce Harwood John Fitzgerald Byers Guest Star Adam Baldwin Knowle Rohrer Guest Star Austin Tichenor Dr. James Langenhahn Guest Star Thomas R. Martin Pathology Assistant Guest Star Zachary Ansley Billy Miles Guest Star Dale Dickey Game Warden Guest Star Chris Carter Executive Producer, Writer Kim Manners Director