Here are some clues:
- His real first name was Clarence.
- He grew up in Hawaii.
- He starred in 'Aquacade' at the New York World's Fair.
- He starred in the 1933 Tarzan movie 'Tarzan the Fearless.'
- He was the only actor to play Tarzan, Flash Gordon and Buck Rogers—the top three comic strip heroes of the 1930s.