Pom-Pom is an arrogant, snobbish, and rude cat. She has no feelings towards anyone except herself. On the other hand, she was shown briefly attracted to Lucifer when the latter became sophisticated in an attempt to impress her, hinting she can be loving, but only when it benefits her.
Like Lucifer, Pom-Pom is chubby. She has pure white fur as well as yellow sclerae with black pupils and purple irises. She wears a pink ribbon around her neck tied into a bow faced to the front (although in "An Uncommon Romance" the bow was turned to behind the neck). Pom-Pom also has a tuft of curly fur above her forehead and the tip of her tail has a similar curl. Her whiskers are curled up.
In the beginning of the movie, Pom-Pom is asleep when Jaq and Gus pass by her to go to Fairy Godmother to read the story of Cinderella in the library. At the end, the mice carry the book to Cinderella, they sneak past the female cat till she wakes up and sees them. She is about to give chase when a pie that was dropped by Daphne lands on her head.
In one of the three stories, "Tall Tail", Pom-Pom tries to catch Jaq who is a human after Fairy Godmother turns him into a human for a day. In "An Uncommon Romance," she and Lucifer get together and she helps him catch the mice, but their relationship is short-lived when Pom-Pom dumps Lucifer out of spite after Jaq dumps water on her.