Annette Kellerman

Merrilla, Queen of the Sea

Hugh Thompson

Prince Hero

Mildred Keats

Princess Leandra

Walter Law

King Boreas

Beth Ivins

Ariela (as Beth Irvine)

Philip Van Loan

Prime Minister

Fred Drucker

Clovis

Louis Dean

The King

Carey Lee

The Queen

Minnie Methol

The Duenna