Lee Powell

Lieutenant Tom Grayson

Bruce Bennett

Lieutenant Frank Corby

Eleanor Stewart

Janet Warfield

Montagu Love

General White

Hugh Sothern

Ben Warfield

Sam Flint

Colonel Grayson

Perry Ivins

Crenshaw

Forrest Taylor

Benson

John Picorri

Professor Gould

Carleton Young

Johnson, 'Aurora' Crewman

John Davidson

Lin Wing

Henry Otho

Sam Hedges, the Gardener

Reed Howes

Parker--Sub Crewman

Tom London

Henchman Wilson

Edmund Cobb

Henchman Ellis

Alan Gregg

Henchman Marco

Allen Matthews

Todd--Submarine Captain

Benson Fong

Gehorda Outlaw (uncredited)

Theodore Lorch

'Wing' Henchman (uncredited)

Victor Wong

Mikichan (uncredited)

Larry Steers

King (uncredited)

John Merton

Thompson (uncredited)

Lester Dorr

The Lightning (uncredited)

George DeNormand

Marine Guard at Burton Street (uncredited)

Frank Baker

General Snell (uncredited)

Jack Ingram

Dirigible Radioman (uncredited)

Monte Montague

Jacobs (uncredited)

Buddy Roosevelt

Lieutenant of the 'Pawnee' (uncredited)

Al Taylor

Bearded Sailor (uncredited)

Duke York

Sam (uncredited)

Stanley Price

The Lightning (voice) (uncredited)

George Magrill

Jamison (uncredited)

Harry Strang

Sgt. Bennett (uncredited)

Robert J. Wilke

Marine in Shanghai (uncredited)

Lloyd Whitlock

Dirigible Captain (uncredited)

Francis Sayles

Renault (uncredited)

Jack Hendricks

Marine (uncredited)