David Duchovny
Fox Mulder (21 eps)
Gillian Anderson
Dana Scully (21 eps)
Robert Patrick
John Doggett (21 eps)
James Pickens Jr.
Alvin Kersh (7 eps)
Bruce Harwood
John Fitzgerald Byers (6 eps)
Dean Haglund
Richard 'Ringo' Langly (6 eps)
Tom Braidwood
Melvin Frohike (6 eps)
Kirk B.R. Woller
Agent Gene Crane (5 eps)
Judson Scott
Absalom (3 eps)
Zachary Ansley
Billy Miles (3 eps)
Adam Baldwin
Knowle Rohrer (3 eps)
Sheila Larken
Margaret Scully (3 eps)
Steven Anderson
Dr. James Parenti (2 eps)
Christine Firkins
Thea Sprecher (2 eps)
David Purdham
Dr. Lev (2 eps)
Jeff Gulka
Gibson Andrew Praise (2 eps)
Denise Crosby
Dr. Mary Speake (2 eps)
Jay Caputo
The Bat Thing (2 eps)
Marc Gomes
Agent Danny Mosley (2 eps)
Nelson Mashita
Dr. Lim (2 eps)
Jonathan Palmer
Principal (2 eps)
Jo-Ann Dean
Secretary (2 eps)
Brent Sexton
Steven Melnick (2 eps)
Arlene Pileggi
1st Woman Party-Goer (2 eps)
Jay Acovone
Duffy Haskell (2 eps)
Nicholas Lea
Alex Krycek (2 eps)
Guy Torry
Shorty (1 eps)
Roy Thinnes
Jeremiah Smith (1 eps)
Noel Gugliemi
Gangbanger #1 (1 eps)
Michael Welch
Trevor (1 eps)
Jennifer Hammon
ICU Nurse (1 eps)
Lee Reherman
Yuri Volkoff (1 eps)
Lawrence Pressman
Mr. Milsap (1 eps)
Colton James
Josh Underwood (1 eps)
Ken Jenkins
Deputy Chief Karras (1 eps)
Arye Gross
Dr. Tom Puvogel (1 eps)
Natalie Radford
Marie Hangemuhl (1 eps)
Gene Dynarski
Ernie Stefaniuk (1 eps)
Cynthia Martells
District Attorney Carter (1 eps)
William O'Leary
Gas Station Man (1 eps)
Kim Greist
Lisa Underwood (1 eps)
Zach Grenier
Dr. Herman Stites (1 eps)
Dan Desmond
Harry Odell (1 eps)
Caroline Lagerfelt
Rustic Woman (1 eps)
James Franco
Officer #2 (1 eps)
Casey Biggs
Saksa (1 eps)
Penny Johnson Jerald
Dr. Hellura Lyle (1 eps)
Caitlin Fein
Mia Dukes (1 eps)
Jolie Jenkins
FBI Agent Leyla Harrison (1 eps)
Bellamy Young
Attorney Janet Wilson (1 eps)
Dan Leegant
Myron Stefaniuk (1 eps)
Wade Williams
Ray Pearce (1 eps)
Karl T. Wright
First Associate (1 eps)
M.C. Gainey
Bo Taylor (1 eps)
Maggie Baird
Sharon Pearl (1 eps)
Rusty Schwimmer
Driver (1 eps)
Sarah Koskoff
Theresa Nemman (1 eps)
Judith Scott
Dr. Kai Bowe (1 eps)
Jordan Warkol
Quinton (1 eps)
Kellie Waymire
Tammi Peyton (1 eps)
Bradford English
Detective Abbott (1 eps)
Rodney Eastman
Ronald Purnell (1 eps)
Michael Bowen
Dwight Cooper (1 eps)
Maura Soden
Trevor's Mother (1 eps)
Jay Underwood
Jeb Dukes (1 eps)
Mary Kathleen Gordon
Woman (1 eps)
Conor O'Farrell
Sheriff Ciolino (1 eps)
Danny Trejo
Cesar Ocampo (1 eps)
Jennifer Parsons
Nora Pearce (1 eps)
Brian Thompson
Alien Bounty Hunter (1 eps)
David Barry Gray
Hank Gulatarski (1 eps)
Tamara Clatterbuck
Larina Jackson (1 eps)
Vyto Ruginis
Lt. Bianco (1 eps)
Frances Fisher
Lizzy Gill (1 eps)
Deep Roy
Beggar Man (1 eps)
Eve Brenner
Mrs. McKesson (1 eps)
Bruce Wright
Gary Garber (1 eps)
Keith Szarabajka
Anthony Tipet (1 eps)
Patrick Kilpatrick
Randall Cooper (1 eps)
Erich Anderson
Doug Underwood (1 eps)
Joe Morton
Martin Wells (1 eps)
Miguel Sandoval
Martin Ortega (1 eps)
Todd Jeffries
Lead Agent Mayfield (1 eps)
Tony Ketcham
Gary Sacks (1 eps)
Gregory Cruz
Diego Garza (1 eps)
Kenneth Meseroll
Owen Harris (1 eps)
Annie O'Donnell
Elderly Woman (1 eps)
Andy Hubbell
Quinton's Father (1 eps)
Sal Landi
Agent Landau (1 eps)
Joanna Sanchez
Trina Galvez (1 eps)
Saxon Trainor
Mary Hendershot (1 eps)
Luis Villalta
Simon de la Cruz (1 eps)
Christopher Hutson
Mr. Burrard (1 eps)
Bernard White
Dr. Desai (1 eps)
Grant Heslov
Andre Bormanis (1 eps)
Jim Cody Williams
Cal Jeppy (1 eps)
Bryan Dilbeck
Disabled Man (1 eps)
Ty Upshaw
Officer #1 (1 eps)
Dayna Beilenson
Roberta Toews (1 eps)
Scott MacDonald
Curt Delario (1 eps)
Gary Bullock
Tall George (1 eps)
Jack Shearer
Judge Kinberg (1 eps)
Randy Walker
SWAT Cop (1 eps)
Bill Jacobson
Thug (1 eps)
Bill Dow
Charles Burks (1 eps)
Sheila Shaw
Marcia Purnell (1 eps)
Ron Canada
Det. Franklin Potter (1 eps)
Calvin Remsberg
Mr. Potocki (1 eps)
Megan Follows
Kath McCready (1 eps)
Jordan Marder
Creature (1 eps)
Joe Sabatino
Captain Triguero (1 eps)
John McGonegle
Uniformed Cop (1 eps)
Gary Bristow
Howard Salt (1 eps)
Bryan Rasmussen
Sheriff's Deputy (1 eps)
Dale Dickey
Game Warden (1 eps)
Leslie Sachs
Lisa's Friend (1 eps)
Greg Boniface
Gangbanger #2 (1 eps)
Lee Duncan
Al Cawdry (1 eps)
Kevin C. Loomis
Chef (1 eps)
Colleen Quinn
Owen's Wife (1 eps)
Dondré Whitfield
Agent (1 eps)
Justin Williams
Paul Hangemuhl (1 eps)
Wendy Gazelle
Katha Dukes (1 eps)
Barry Cullison
Sheriff Sanchez (1 eps)
Chris Jacobs
E.R. Doctor (1 eps)
Cheryl Francis Harrington
E.R. Nurse (1 eps)
J. Patrick McCormack
Brent Tufeld (1 eps)
Steve Wilcox
Ed Dell (1 eps)
Reece Morgan
Owen Harris' Little Boy (1 eps)
Mimi Savage
Teacher (1 eps)
Gibby Brand
Arthur Gaffin (1 eps)
Diana Castle
Delivery Nurse (1 eps)
Joe Basile
Lead Guard (1 eps)
Steve Stapenhorst
Principal (1 eps)
Jack Forbes
Ray's Double (1 eps)
Devlin Elliott
Pizza Delivery Man (1 eps)
Rich Marotta
Hockey Announcer (1 eps)
Austin Tichenor
Dr. James Langenhahn (1 eps)
Larry Dorf
Pathology Assistant (1 eps)
Elizabeth Cheap
Second Nurse (1 eps)
Roger Hewlett
Tall Guard (1 eps)
Roz Witt
Night Nurse (1 eps)
Jacob Franchek
Red-Headed Kid (1 eps)
Ric Sarabia
Prison Trustee (1 eps)
Lawrence Le John
Angus Stedman (1 eps)
Randy Ross
Nike Man (1 eps)
Richard McGonagle
Dr. Francis Orovetz (1 eps)
Winston Story
Bellboy (1 eps)
Dwight Hicks
Prison Armed Guard (1 eps)
Christopher Stanley
Agent Farah (1 eps)
Veronica Brown
Payphone Woman (1 eps)
Victoria Gallegos
Receptionist (1 eps)
Karon Kearney
2nd Woman Party-Goer (1 eps)
Shane Sinutko
Lead Cop (1 eps)
Jake Fritz
Luke Doggett (1 eps)
Jerry Shiban
Scully's Baby (1 eps)
J.C. Murad
Intercom Guard (1 eps)
Wayne A. King
Homeless Man (1 eps)
Kiran Rao
Customs Agent (1 eps)
Mary Ostrow
Nurse (1 eps)
Alexandra Margulies
Second Associate (1 eps)
James Howell
Homicide Detective (1 eps)
Tony Adelman
Trevor's Father (1 eps)
Louise Melilli
Distraught Woman (1 eps)
Brien Blakely
Reporter (1 eps)
David Doty
Minister (1 eps)
Judd Trichter
Richie (1 eps)
Derick Alexander
Bailiff (1 eps)
Mary Wickliffe
Nurse (1 eps)
Larry Rippenkroeger
Deckhand (1 eps)
Anne-Marie Johnson
Vicky Wells (uncredited) (1 eps)
Jennifer Griffin
Dr. Miryum (1 eps)
Jane Daly
Mrs. Holt (1 eps)
Michael McGrady
Sheriff Kurt Frey (1 eps)
Amanda Fein
Mia Dukes (1 eps)
Kayla Henry
Haley Wells (1 eps)
Lisa Kaseman
Pathology Assistant (1 eps)
James Otis
Arlen Sacks (1 eps)
Kevin McClatchy
James Leeds (1 eps)
Marty Zagon
Mr. Coeben (1 eps)
Wayne Alexander
Senior Agent (1 eps)
Kevin Graves
Kid (1 eps)
Christopher Graves
Kid (1 eps)
Eddie Kaye Thomas
Gary Edward Cory (1 eps)
Thomas R. Martin
Pathology Assistant (1 eps)
Kyle Pepi
Billy Underwood (1 eps)
Ryan Pepi
Billy Underwood (1 eps)
Tom Jourden
Carlton Chase (1 eps)