Juanita Hansen was born in Des Moines, Iowa. Her family moved to California when she was a girl and Juanita graduated from Los Angeles High School. There she secured her first acting job with L. Frank Baum's "Oz Film Manufacturing Company". She appeared in the The Patchwork Girl of Oz, a film based on Baum's book. Given a minor role as the bell ringer, Hansen had a major role in her next "Oz" film that same year titled The Magic Cloak of Oz. This was an adaptation of Queen Zixi of Ix, in which she played the title role.
Early in her career the actress was also associated with Famous Players-
She left Keystone. She was soon doing serious roles for Universal Studios. Miss Hansen became famous as the star of the eighteen episode action/adventure serial called "The Brass Bullet." The actress made seven films in 1919. Soon she was cast in the starring role of "Princess Elyata" in a fifteen episode serial called "The Lost City." It was produced by William Selig and the three Warner brothers, Harry, Jack, and Sam. The successful serial was edited down to seven reels and re-
Hansen's performance in the Universal productions led to a 1920 deal with Pathé to star with Warner Oland and William N. Bailey in a fifteen episode serial titled "The Phantom Foe." She made a second Pathé serial called "The Yellow Arm (1921)," again with Oland and Bailey plus Marguerite Courtot. In 1921 Juanita retired from movies after she was scalded in a bathroom accident in a New York City hotel. She was given $118,000 in damages following a long legal battle.