The Satan Bug

George Maharis

Lee Barrett

Richard Basehart

Dr. Gregor Hoffman

Anne Francis

Ann Williams

Dana Andrews

Gen. Williams

John Larkin

Dr. Leonard Michaelson

Richard Bull

Eric Cavanaugh

Frank Sutton

Henchman Donald

Ed Asner

Henchman Veretti

Simon Oakland

Tasserly

John Anderson

Agent Reagan

John Clarke

Guard Lt. Raskin

Hari Rhodes

Guard Lt. Johnson

Martin Blaine

Martin

Henry Beckman

Dr. Baxter

Harry Lauter

Fake SDI Agent

James Hong

Dr. Yang

Russ Bender

Desk Guard Mason

Harold Gould

Dr. Ostrer (uncredited)

Lee Remick

Waitress

William Bryant

Lead Agent "X-Ray", drives car