Her first role on a professional stage came two years later at the
St. Louis Municipal Opera production of
The American Way. Her first acting role using mainly her voice was heard by listeners of the
KMOX radio program
The Land We Live In. She graduated from Ritenour High School. 1951). A review of
The Billy Bean Show in the trade publication
Billboard said: "Billie Lou Watt did a smooth job as his girl friend. This ingenue should be a natural for many television shows." She also appeared on the 1958 series
From These Roots as Maggie Barber Weaver. Her career in animation began after she and her husband Hal Studer were suggested by
Fred Ladd as actors in his journey into animation, with their first successful project being Astro Boy in 1963. Along the way, Billie Lou and Hal learned how to write character dialog and situations as Ladd brought in more shows to work on, resulting in such series as
Kimba the White Lion (as Kimba) and
Gigantor (as Jimmy Sparks). Ladd's cast remained close during Watt's career, including her friend Ray Owens, his wife Sonia, and Gilbert Mack. Watt returned to acting as herself on the
soap opera The Edge of Night in the role of Florence Hatcher in 1967, but her longest television role would be Ellie Harper Bergman on
Search for Tomorrow from 1968 to 1981. Watt continued to provide voice-acting and script-writing duties for English redubs of Japanese anime, such as the 1970s feature-length
Jack and the Beanstalk (as Jack),
Taro the Dragon Boy (as the title character), and the Biblical-based television series
Superbook (as Christopher Peeper and various other characters) and
The Flying House (as Justin Casey and various other characters). Later in life, Watt's voice was heard by radio listeners of In-Touch Networks who are
visually impaired or completely
blind. Watt's final acting role was the voice of Ma Bagge (Eustace's mother) on the series
Courage the Cowardly Dog from 1999 to 2001. The fourth (and final) season of
Courage the Cowardly Dog was dedicated to her memory. ==Death==