Ms. Squibbles is a doting, single parent who encourages, accommodates, and more so, coddles her only son, Scott "Squishy" Squibbles. Squishy is 19 years old and still lives at home, but who can blame him? Ms. Squibbles is Monstropolis' best mom—she cooks for him, does his laundry—she even acts as house mom when he has his "little friends" over to play fraternity.
Sheri serves as the housewife in the Oozma Kappa fraternity house, and the sweet mother of Squishy. At the end of the movie, Don Carlton announces he and Sheri are engaged, which Squishy deems as "weird" due to his friend marrying his mother.
Ms. Squibbles is nice and kind, and is somewhat overprotective of her son and his friends. She still treats Scott like a kid, but he doesn't complain, although sometimes it gets embarrassing.
It's also confirmed that she likes heavy metal.
Like her son, Ms. Squibbles has light pink skin, with five eyeballs, but wears a blue shirt covered in pink and green flowers and blonde hair that is held together by hair curlers.
- "Oh, scary!"
- "Have fun, kids! I'll just be here listening to my tunes!"
- "Seat belts!"
- "Does anyone want gum?"