- Baby Boop (Is my Palm Read)
- Junior (The Foxy Hunting)
- Aloysius/Billy Boop (Stopping the Show & Let Me Call You Sweetheart)
- Mrs Boop in Minnie the Moocher
- Pudgy from (1934 -1938)
- Evil Queen in Snow White
- Mrs Fritzi Ritz
- Bimbo's Mother in Minding the Baby
- Junior in The Foxy Hunter
Mae Questel also provided the voice of Felix the Cat in three shorts produced by Van Beuren Studios, and Cute Kitty & Louise the Mouse in Famous Studio's "Herman & Katnip". Little Audrey and Casper the friendly ghost in their respective animated shorts. The Woman in the Shoe & Little Bo Peep in color classics. In the 1950s, she was the voice for the title character of the pioneering interactive Saturday-morning cartoon series Winky Dink and You. Questel's final film was a voice cameo appearance in Felix the Cat: The Movie. She continued to provide the voice for Olive Oyl in television specials and elsewhere until her death.
- Mae Questel died in 1998 from complications related to Alzhimer's disease at the age of 89 in New York City. She was buried in West Babylon, New York's New Montefiore Cemetery. She had two sons, Robert Balkin, who pre-deceased her, and Richard, who survived her.
- Musical Justice as (Betty Boop) live action.
- Questel had a withered arm; in her on-camera film appearances, she was usually photographed with elbows bent and both hands at her waist or holding an object in the crook of her elbow to make it less obvious that one arm was shorter and smaller than the other.
- Mae Questel was once thought to be the only voice of Betty Boop, when Betty was revived in the 80's.
- Mae had embarked upon a career in teaching when some of her friends, knowing her to be a natural mimic, entered her in a Helen Kane impersonation contest at the RKO Fordham Theater where Miss Helen Kane was appearing.
- Mae's dead-on mimicry earned her a contract with the RKO vaudeville circuit which finally kicked off her professional career of voice-acting.
- Mae Questel is probably best known as "Aunt Blue Bell" in the 70's paper towel commercials and as the Aunt Bethany in 'National Lampoon's Christmas Vacation.
- Mae Questel was often mistaken for Bonnie Poe in Hollywood On Parade A8.