Armand Cortes as Nikolas Rokoff, a villain; Franklin B. Coates as Paul D'Arnot, Tarzan's old friend; George Romain as Count de Coude; Production notes
Armand Cortes - Lou Max; Warren Cook - Thomas Hayden (* as C. Warren Cook) Purnell Pratt - John Bland; Frank Losee - Hall Bentley; Eric Hudson - Peter the Hermit