Character Name : Cmdr. Robert 'Bob' Kingsley

Original Name : George O’Brien

Gender : Male

Character Name : Anna Marie Von Steuben

Original Name : Marion Lessing

Gender : Male

Character Name : Fraulein Lolita

Original Name : Mona Maris

Gender : Female

Character Name : Chief Mike 'Guns' Costello

Original Name : Walter C. Kelly

Gender : Male

Character Name : 'Lug' Kaufman

Original Name : Warren Hymer

Gender : Male

Character Name : Ens. Richard 'Dick' Cabot (as Gaylord Pendleton)

Original Name : Steve Pendleton

Gender : Male

Character Name : Chief Joe Cobb

Original Name : Walter McGrail

Gender : Male

Character Name : Lt. 'Mac' McGregor

Original Name : Larry Kent

Gender : Male

Character Name : Baron Ernst von Steuben (U-boat commander)

Original Name : Henry Victor

Gender : Male

Character Name : Franz Shiller

Original Name : John Loder

Gender : Male