Apollon Uni
— The Triton (prologue) (as Uni Apollon)
Álex Nova
— Don Esteban Ferragut (prologue) (as Alex Nova)
Kada-Abd-el-Kader
— Don Esteban's Son - Ulysses (prologue)
Hughie Mack
— Caragol (prologue)
Alice Terry
— Freya Talberg
Antonio Moreno
— Ulysses Ferragut
Mademoiselle Kithnou
— Ferragut's Wife - Dona Cinta (as Mle. Kithnou)
Mickey Brantford
— Ferragut's Son - Esteban (as Michael Brantford)
Rosita Ramírez
— Ferragut's Niece - Pepita
Frédéric Mariotti
— Toni - the Mate (as Fredrick Mariotti)
Pâquerette
— Doctor Fedelmann (as Mme. Paquerette)
Fernand Mailly
— Count Kaledine
Andrews Engelmann
— Submarine Commander (as André von Engelman)
John George
— Servant (uncredited)