Bob Ramsey (played by Robert Agnew) is a protagonist in Unknown Treasures.
Mary Hamilton (played by Gladys Hulette) appears in Unknown Treasures.
Ralph Cheneey (played by John Miljan) appears in Unknown Treasures.
Simmons (played by Gustav von Seyffertitz) appears in Unknown Treasures.
Remus (played by Jed Prouty) appears in Unknown Treasures.
Cyrus Hamilton (played by Bertram Marburgh) appears in Unknown Treasures.
The Ape (played by Theodore Lorch) appears in Unknown Treasures.
