Character Name : Dr. Chet Walker

Original Name : Richard Denning

Gender : Male

Character Name : Capt. Dave Harris

Original Name : S. John Launer

Gender : Male

Character Name : Frank Buchanan

Original Name : Michael Granger

Gender : Male

Character Name : Dr. Wilhelm Steigg

Original Name : Gregory Gaye

Gender : Male

Character Name : Joyce Walker

Original Name : Angela Stevens

Gender : Female

Character Name : Penny Walker

Original Name : Linda Bennett

Gender : Female

Character Name : Chief Camden

Original Name : Charles Evans

Gender : Male

Character Name : Dist. Atty. MacGraw

Original Name : Tris Coffin

Gender : Male

Character Name : Mayor Bremer

Original Name : Pierre Watkin

Gender : Male

Character Name : Reporter #1

Original Name : Harry Lauter

Gender : Male

Character Name : Reporter #2

Original Name : Larry J. Blake

Gender : Male

Character Name : Tom Dunn (uncredited)

Original Name : Paul Hoffman

Gender : Male

Character Name : Dr. Kenneth C. Norton (uncredited)

Original Name : Nelson Leigh

Gender : Male

Character Name : Jason Franchot (uncredited)

Original Name : Edward Coch

Gender : Male

Character Name : Gen. Saunders (uncredited)

Original Name : Lane Chandler

Gender : Male

Character Name : Lester Banning (uncredited)

Original Name : Don C. Harvey

Gender : Male

Character Name : Dick Cutting, Radio Broadcaster (uncredited)

Original Name : Richard H. Cutting

Gender : Male

Character Name : Gambling Casino Employee (uncredited)

Original Name : Paul Bradley

Gender : Male

Character Name : Willard Pearce (uncredited)

Original Name : Karl 'Killer' Davis

Gender : Male

Character Name : Tom, Policeman (uncredited)

Original Name : Terry Frost

Gender : Male

Character Name : Policeman (uncredited)

Original Name : Cap Somers

Gender : Male

Character Name : Police Officer (uncredited)

Original Name : Tyler McVey

Gender : Male

Character Name : Bartender (uncredited)

Original Name : Eddie Foster

Gender : Male

Character Name : Policeman (uncredited)

Original Name : Bill Clark

Gender : Male

Character Name : Pilot (uncredited)

Original Name : Chuck Hicks

Gender : Male

Character Name : Creature Who Calls Camden (uncredited)

Original Name : Dick Crockett

Gender : Male

Character Name : Creature (uncredited)

Original Name : George Bruggeman

Gender : Male

Character Name : Creature (uncredited)

Original Name : Charles Horvath

Gender : Male

Character Name : Creature (uncredited)

Original Name : Boyd 'Red' Morgan

Gender : Male

Character Name : Creature Vernon Dunn (uncredited)

Original Name : Michael Ross

Gender : Male