David Duchovny

Agent Fox Mulder

Acting

Gillian Anderson

Agent Dana Scully

Acting

Mitch Pileggi

Assistant Director Walter Skinner

Acting

William B. Davis

The Cigarette-Smoking Man

Acting

John Neville

The Well-Manicured Man

Acting

Martin Landau

Kurtzweil

Acting

Jeffrey DeMunn

Bronschweig

Acting

Tom Braidwood

Frohike

Acting

Blythe Danner

Cassidy

Acting

Terry O'Quinn

Michaud

Acting

Dean Haglund

Langly

Acting

Bruce Harwood

Byers

Acting

Armin Mueller-Stahl

Strughold

Acting

Lucas Black

Stevie

Acting

Christopher Fennell

2nd Boy

Acting

Cody Newton

3rd Boy

Acting

Blake Stokes

4th Boy

Acting

Don S. Williams

Group Elder

Acting

George Murdock

2nd Elder

Acting

Michael Shamus Wiles

Black-Haired Man

Acting

Darrell Davis

Primitive #1

Crew

Carrick O'Quinn

Primitive #2

Crew

Tom Woodruff Jr.

Creature #1

Acting

Greg Ballora

Creature #2

Acting

Ted King

FBI Agent on Roof

Acting

Luis Beckford

FBI Agent

Acting

Steve Rankin

Field Agent

Acting

Gary Grubbs

Fire Captain Cooles

Acting

Steven M. Gagnon

Last Agent Out

Acting

Larry Joshua

DC Cop

Acting

Glendon Rich

DC Cop #2

Acting

Gunther Jenson

Security Guard

Acting

Scott Alan Smith

Technician

Acting

Ian Ruskin

Well-Manicured Man's Valet

Acting

Paul Welterlen

Control Room Operator

Acting

Joel Traywick

Young Naval Guard

Acting

Milton Johns

British Valet

Acting

Michael Krawic

2nd Paramedic

Acting

Larry Rippenkroeger

Towncar Driver

Crew

Josh McLaglen

Buzz Mihoe

Directing

Randy Hall

Windbreakered Agent

Crew

T.C. Badalato

Fireman

Acting

Amine Zary

Tunisian

Acting

David Paris

Pilot

Crew

Vanessa Morley

Young Samantha Mulder (archive footage)

Acting

Jason Beghe

FBI Man at Bomb Site (uncredited)

Acting

Glenne Headly

Barmaid (uncredited)

Acting