as Mortimer Duke
as Arthur Selwyn
as Art Selwyn
as Shadow (voice)
as Tibor Czerny
as Father Clemente
as Dr. Wallace Wrightwood
as Commander Taylor
as Phil O'Neil (Credits) / Phil 'Mac' McNeil
as Ricardo Quintana
as Charlie Dwyer
as Jimmy Hall
as Larry Martin / Baron Manuel Duarte
as Harry Aldrich
as Alexander Graham Bell
