'' (1925), her first film appearance. Convent-educated, she started her career in
vaudeville, billed as Chotsie Noonan and known for her petite but curvaceous frame and curly brown hair. She broke into films in 1925 at the
Hal Roach studio, playing
flappers or hoydenish tomboys in short-subject comedies. During her tenure with Roach she was billed as Sue O'Neil or Sue "Bugs" O'Neil. She was teamed with
Constance Bennett and
Joan Crawford in the
MGM film
Sally, Irene and Mary (
1925), directed by
Edmund Goulding, which was "her big break." She appeared with Joan Crawford again as a
WAMPAS Baby Star in 1926. Her fame began to subside after silent pictures gave way to sound. Although her broad "Joisey" accent in early talkies like
Jazz Heaven was unsuitable for most ingenue roles,
Warner Bros. signed her to play streetwise girls in its feature films of 1929-30. After Warners released her in 1930, O'Neil freelanced at various studios.
The Brat, a 1931 pre-Code film directed by
John Ford, was revived at New York City's
Museum of Modern Art in November 2016. A showcase for O'Neil, the movie involves a brash chorus girl's effect upon a snobbish family when their son brings her home in order to research a novel. Her last American film was released in 1935; she traveled to England in 1937 for one final film,
Kathleen Mavourneen, of interest today for a guest appearance by comedian
Arthur Lucan as
Old Mother Riley. ==Stage==