- Harry Lauter - Reporter #1
- Larry J. Blake - Reporter #2
- Paul Hoffman - Tom Dunn (uncredited)
- Nelson Leigh - Dr. Kenneth C. Norton (uncredited)
- Edward Coch - Jason Franchot (uncredited)
- Lane Chandler - Gen. Saunders (uncredited)
- Don C. Harvey - Lester Banning (uncredited)
- Richard H. Cutting - Dick Cutting, Radio Broadcaster (uncredited)
- Paul Bradley - Gambling Casino Employee (uncredited)
- Karl 'Killer' Davis - Willard Pearce (uncredited)
- Terry Frost - Tom, Policeman (uncredited)
- Cap Somers - Policeman (uncredited)
- Tyler McVey - Police Officer (uncredited)
- Eddie Foster - Bartender (uncredited)
- Bill Clark - Policeman (uncredited)
- Chuck Hicks - Pilot (uncredited)
- Dick Crockett - Creature Who Calls Camden (uncredited)
- George Bruggeman - Creature (uncredited)
- Charles Horvath - Creature (uncredited)
- Boyd 'Red' Morgan - Creature (uncredited)
- Michael Ross - Creature Vernon Dunn (uncredited)
-
Edward L. Cahn
- Curt Siodmak
- Curt Siodmak
- J.S. Westmoreland
Richard Denning hace el papel de Dr. Chet Walker.
S. John Launer interpreta a Capt. Dave Harris en la película.
Michael Granger interpreta a Frank Buchanan en la película.
Gregory Gaye hace el papel de Dr. Wilhelm Steigg.
Angela Stevens interpreta a Joyce Walker en la película.
Linda Bennett hace el papel de Penny Walker.
Charles Evans interpreta a Chief Camden en la película.
Tris Coffin interpreta a Dist. Atty. MacGraw en la película.
Pierre Watkin hace el papel de Mayor Bremer.
Harry Lauter interpreta a Reporter #1 en la película.
Larry J. Blake hace el papel de Reporter #2.
Paul Hoffman interpreta a Tom Dunn (uncredited) en la película.
Nelson Leigh interpreta a Dr. Kenneth C. Norton (uncredited) en la película.
Edward Coch hace el papel de Jason Franchot (uncredited).
Lane Chandler interpreta a Gen. Saunders (uncredited) en la película.
Don C. Harvey hace el papel de Lester Banning (uncredited).
Richard H. Cutting hace el papel de Dick Cutting, Radio Broadcaster (uncredited).
Paul Bradley hace el papel de Gambling Casino Employee (uncredited).
Karl 'Killer' Davis interpreta a Willard Pearce (uncredited) en la película.
Terry Frost hace el papel de Tom, Policeman (uncredited).
Cap Somers interpreta a Policeman (uncredited) en la película.
Tyler McVey interpreta a Police Officer (uncredited) en la película.
Eddie Foster interpreta a Bartender (uncredited) en la película.
Bill Clark interpreta a Policeman (uncredited) en la película.
Chuck Hicks interpreta a Pilot (uncredited) en la película.
Dick Crockett interpreta a Creature Who Calls Camden (uncredited) en la película.
George Bruggeman interpreta a Creature (uncredited) en la película.
Charles Horvath interpreta a Creature (uncredited) en la película.
Boyd 'Red' Morgan hace el papel de Creature (uncredited).
Michael Ross interpreta a Creature Vernon Dunn (uncredited) en la película.
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