Marshall Grauer

Marshall Grauer

饰：Dr. Kurt Leopold

Wade Popwell

饰：The Monster

Paul Galloway

Paul Galloway

饰：Sheriff Krantz

Gerald Cruse

Gerald Cruse

饰：Marine Biologist Rex

Sanna Ringhaver

Sanna Ringhaver

饰：INPIT Agent Martha Walsh

Dave Dickerson

Dave Dickerson

饰：INPIT Agent Walker Stevens

Archie Valliere

Archie Valliere

饰：Deputy Sheriff

Nancy Lien

Nancy Lien

饰：Girl camper

Russell Holcomb

Russell Holcomb

Gloria Brady

Gloria Brady

Del Galloway

Del Galloway

Hal Nearhoof

Hal Nearhoof

Jim Merrill

Jim Merrill

饰：Boy on porch

Elizabeth Barton

Elizabeth Barton

饰：Girl on porch

Bob Knowles

Bob Knowles

Carol Thompson

Carol Thompson

Jack Weatherford

Jack Weatherford

Doug Thomas

Doug Thomas

Frank Crowell

Frank Crowell

饰：(uncredited)