A defiant Finkelstein goes on to call Jack an "oblivious twit" and explain that he wanted to "teach Sally a lesson" before declaring his intentions to make a new creation and disappearing...

The character Sally was literally created in a lab by Dr. Finkelstein, a mad scientist and resident of Halloween Town. While the exact nature of their relationship is unclear, Dr. Finkelstein exhibits numerous types of abuse throughout the movie.

Sally, the beloved character from Tim Burton’s iconic film “The Nightmare Before Christmas,” has captured the hearts of fans worldwide. With her striking appearance, endearing personality, and remarkable story, Sally has become an integral part of the movie’s legacy.

Speaking of the story, the movie isn’t actually the birth of Jack Skellington. Though most people think of Tim Burton as a Hollywood writer and director, his titular holiday flick was actually inspired by the 1981 parody poem he wrote, putting a satirical spin on “The Night Before Christmas.”

"Created" from Sora's memories of Halloween Town, Sally is in possession of a potion Finkelstein made that can bring "true memories". She hesitates to give the potion to Jack, as Heartless appeared when Finkelstein did so much as sniff the potion.