Nancy Lee began as an unnamed female anthropomorphic French poodle and supporting character in the Bimbo cartoons before evolving into a fully human figure, briefly retaining canine traits like floppy ears and a dog-like nose. She became an iconic Fleischer Studios star of the early 1930s, celebrated for her flapper style, baby-doll voice, musical performances, and her playful blend of innocence and flirtation.

In her earliest appearances (e.g., Dizzy Dishes), she functions more as a background performer or love interest, with stories centered on Bimbo, an incompetent but earnest suitor, and chaotic slapstick situations involving jealous rivals or bizarre cartoon threats. As her popularity grew, she became the central protagonist, starring in a wide range of surreal, musical shorts.

Her cartoons often place her in dreamlike, fantastical scenarios:

*As a stage performer, race car driver, inventor’s assistant, or explorer.

*As classic storybook heroines such as Cinderella and Alice in Wonderland.

*As the focus of supernatural or experimental plots involving ghosts, living machines, and animated objects.

Her personality blends optimism, charm, resilience, and curiosity. She is frequently startled or imperiled by chaos but remains resourceful and good-natured, often singing her way through danger. Music is central to her character and she regularly performs jazz standards and original songs that drive the narrative forward.

She also has a nephew named Junior, a tomboyish cousin named Buzzy Boop, and her elderly relative Grampy.

All published appearances of Nancy Lee from before January 1, )-(95)}} are public domain in the US as well as dozens of post-)-(96)}} cartoons that are already public domain due to non-renewed copyrights, making their added material free to use as well.

{|
|style="vertical-align: top;"|
* Dizzy Dishes (August 9, 1930)
* Barnacle Bill (August 25, 1930)
* Accordion Joe (December 13, 1930)
* Mysterious Mose (December 29, 1930)
* Betty Boop's Ker-Choo (January 6, 1933)
* Betty Boop's Crazy Inventions (January 27, 1933)
* Is My Palm Read (February 17, 1933)
* [https://en.wikipedia.org/wiki/Poor_Cinderella Poor Cinderella] (August 3, 1934)
* Betty in Blunderland (April 6, 1934)
* Betty Boop's Rise to Fame (May 18, 1934)*
* Baby Be Good (January 18, 1935)
* Taking the Blame (February 15, 1935)
* Stop That Noise (March 15, 1935)
* Swat the Fly (April 19, 1935)
* No! No! A Thousand Times No!! (May 24, 1935)
* A Little Soap and Water (June 21, 1935)
* A Language All My Own (July 19, 1935)
* Betty Boop and Grampy (August 16, 1935)
* Judge for a Day (September 20, 1935)
* Making Stars (October 18, 1935)
* Betty Boop with Henry, the Funniest Living American (November 22, 1935)
* Little Nobody (December 18, 1935)
* Betty Boop and the Little King (January 31, 1936)
* Not Now (February 28, 1936)
* Betty Boop and Little Jimmy (March 27, 1936)
* We Did It (April 24, 1936)
* A Song a Day (May 22, 1936)
* More Pep (June 19, 1936)
* You're Not Built That Way (July 17, 1936)
|style="vertical-align: top;"|
* Happy You and Merry Me (August 21, 1936)
* Training Pigeons (September 18, 1936)
* Grampy's Indoor Outing (October 16, 1936)
* Be Human (November 20, 1936)
* Making Friends (December 18, 1936)
* House Cleaning Blues (January 15, 1937)
* Whoops! I'm a Cowboy (February 12, 1937)
* The Hot Air Salesman (March 12, 1937)
* Pudgy Takes a Bow-Wow (April 9, 1937)
* Pudgy Picks a Fight! (May 14, 1937)
* The Impractical Joker (June 18, 1937)
* Ding Dong Doggie (July 23, 1937)
* The Candid Candidate (August 27, 1937)
* Honest Love and True (March 25, 1938)
* The Lost Kitten (June 24, 1938)
* Buzzy Boop (July 29, 1938)
* Buzzy Boop at the Concert (September 16, 1938)
* On with the New (December 2, 1938)
* My Friend the Monkey (January 28, 1939)
* So Does an Automobile (March 31, 1939)
* Musical Mountaineers (May 12, 1939)
* The Scared Crows (June 9, 1939)
* Rhythm on the Reservation (July 7, 1939)
* Yip Yip Yippy (August 11, 1939)
|}

* These shorts contain clips from cartoons that are still under copyright. Only the original animation, or archived footage taken from other public domain cartoons in these shorts is in the public domain.

File:Mysterious mose betty.webp|From ''Mysterious Mose (1930)''
File:Nancylee betty.webp|From ''Barnacle Bill (1930)''
File:Accordion Joe 1930 Betty.webp|From ''Accordion Joe (1930)''

* She didn't have a name in her first appearance but was named Betty (with no surname) in Silly Scandals (May 1931) and was officially named Betty Boop in the cartoon Minding the Baby (Sept. 1931). Minding the Baby will enter the public domain on January 1, 2027. While Betty by itself is too generic to trademark, Betty Boop is currently trademarked by Global Icons Inc. (and formerly King Features Syndicate).
* Fleischer Studios’ claim that the “fully developed” Betty Boop remains copyrighted is legally questionable; a 2011 appeals court ruled Fleischer did not own the core character copyright due to a broken chain of title. (Note: This isn't the same animation studio who made the cartoons, this is the 2011 iteration that "claims" ownership of former Fleischer characters, headed by Max's grandson, Mark Fleischer, however courts have never supported their ownership claims, as seen above).
* Baby Esther Jones, a child jazz singer and performer, is alleged to have also used scat vocalization in some of her music. In 1929 she was eight years old and doing an act that impersonated famous singers, including Helen Kane's famous 1928 song "That's My Weakness Now," which includes several "boop-boop-a-doop" lyrics. There is no evidence that she used those lyrics before Helen Kane, and, considering their respective ages, it is highly unlikely Kane copied from her instead of the other way around. A number of people believe that Jones is somehow who Fleischer Studios based their character on.

*[https://en.wikipedia.org/wiki/Betty_Boop Wikipedia]
*[https://bettyboop.fandom.com/wiki/BETTY_BOOP_Wiki Betty Boopedia]
*[https://comicvine.gamespot.com/betty-boop/4005-6915/issues-cover/ ComicVine]
*[https://web.law.duke.edu/cspd/publicdomainday/2026/#section2 Center for the Study of the Public Domain]
*[https://www.comics.org/feature/3013/ GCD]
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