Lieutenant Tom Grayson

Lieutenant Frank Corby

Janet Warfield

General White

Ben Warfield

Colonel Grayson

Crenshaw

Benson

Professor Gould

Johnson, 'Aurora' Crewman

Lin Wing

Sam Hedges, the Gardener

Parker--Sub Crewman

Henchman Wilson

Henchman Ellis

Henchman Marco

Todd--Submarine Captain

Gehorda Outlaw (uncredited)

'Wing' Henchman (uncredited)

Mikichan (uncredited)

King (uncredited)

Thompson (uncredited)

The Lightning (uncredited)

Marine Guard at Burton Street (uncredited)

General Snell (uncredited)

Dirigible Radioman (uncredited)

Jacobs (uncredited)

Lieutenant of the 'Pawnee' (uncredited)

Bearded Sailor (uncredited)

Sam (uncredited)

The Lightning (voice) (uncredited)

Jamison (uncredited)

Sgt. Bennett (uncredited)

Marine in Shanghai (uncredited)

Dirigible Captain (uncredited)

Renault (uncredited)

Marine (uncredited)

Director

Director