cast
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Lee Powell
Lieutenant Tom Grayson
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Bruce Bennett
Lieutenant Frank Corby
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Eleanor Stewart
Janet Warfield
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Montagu Love
General White
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Hugh Sothern
Ben Warfield
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Sam Flint
Colonel Grayson
- Perry Ivins Crenshaw
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Forrest Taylor
Benson
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John Picorri
Professor Gould
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Carleton Young
Johnson, 'Aurora' Crewman
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John Davidson
Lin Wing
- Henry Otho Sam Hedges, the Gardener
- Reed Howes Parker--Sub Crewman
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Tom London
Henchman Wilson
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Edmund Cobb
Henchman Ellis
- Alan Gregg Henchman Marco
- Allen Matthews Todd--Submarine Captain
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Benson Fong
Gehorda Outlaw (uncredited)
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Theodore Lorch
'Wing' Henchman (uncredited)
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Victor Wong
Mikichan (uncredited)
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Larry Steers
King (uncredited)
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John Merton
Thompson (uncredited)
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Lester Dorr
The Lightning (uncredited)
- George DeNormand Marine Guard at Burton Street (uncredited)
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Frank Baker
General Snell (uncredited)
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Jack Ingram
Dirigible Radioman (uncredited)
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Monte Montague
Jacobs (uncredited)
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Buddy Roosevelt
Lieutenant of the 'Pawnee' (uncredited)
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Al Taylor
Bearded Sailor (uncredited)
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Duke York
Sam (uncredited)
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Stanley Price
The Lightning (voice) (uncredited)
-
George Magrill
Jamison (uncredited)
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Harry Strang
Sgt. Bennett (uncredited)
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Robert J. Wilke
Marine in Shanghai (uncredited)
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Lloyd Whitlock
Dirigible Captain (uncredited)
- Francis Sayles Renault (uncredited)
- Jack Hendricks Marine (uncredited)