- Jack Skellington
- Dr. Finkelstein
- Lock, Shock, and Barrel
- Oogie Boogie
- Attic Snake
- Mrs. Claus
- Santa Claus
- Clown with the Tear-Away Face
- Corpse Family
- The Devil
- Easter Bunny
- Frankenstein's Monster
- The Grim Reaper
- Halloween Town Band
- Hanging Tree and Skeletons
- Harlequin Demon
- Mr. Hyde
- Mayor of Halloween Town
- Melting Man
- Monster Who Lives Under The Bed
- Monster Who Lives Under the Stairs
- Mummy Boy
- Skeletal Reindeer
- Toy Duck
- Undersea Gal
- Vampire Teddy
- Winged Demon
- Man-Eating Wreath
Jack is a refined and composed undead individual, possessing both gracefulness and patience. He is generally reliable in his efforts to act in the best interest of others. Despite his sound reasoning, Jack's decision-making may come under scrutiny on occasion. While he conducted thorough research on Christmas, he chose to stick with what he and his friends were familiar with when he decided to give Santa Claus a break and fill in for him.
Sally is a slim character with a body made of pale blue fabric, decorated with multiple sewing stitches all over. She has big eyes featuring small black pupils and wears red lipstick. Her hair is a reddish hue and extends to her tailbone, with a hidden sewing needle. Furthermore, it is widely recognized that Sally's interior is filled with autumn leaves.
Dr. Finkelstein is a significant character who also serves as a minor antagonist. A wheelchair-bound mad scientist living in Halloween Town, Finkelstein created Sally and Jewel Finkelstein. In the film, he tries to control and restrict Sally's actions outside of his laboratory while also aiding Jack Skellington in his Christmas venture. Finkelstein becomes too disillusioned with Sally and starts to develop a new creation, eventually disclosed as Jewel.
Oogie resides in a casino-inspired hideout situated underneath the treehouse of his cohorts, Lock, Shock, and Barrel, located in the outskirts of Halloween Town. Due to his frightful disposition, cannibalistic tendencies, and his competition with the Pumpkin King, Jack Skellington, Oogie is both dreaded and despised.
One of the lesser-known figures in Tim Burton's 1993 stop-motion Disney movie The Nightmare Before Christmas is the Clown with the Tear-Away Face, who is also referred to as simply the Clown. This character, who resides in Halloween Town, shares the desire of other inhabitants to commemorate the Christmas holiday.
As a representative of the Easter holiday, the Easter Bunny is a seasonal figure who resides in Easter Town. Adorned with a yellow "HAPPY EASTER" sash and carrying a wicker basket filled with eggs, this character is a depiction of the legendary Peter Cottontail. The Easter Bunny is characterized by a tall, rabbit-like appearance, with pink, yellow, and white fur, buck teeth, long ears, and a small nose.
With three black and orange tentacles sprouting from his head, this character sports a mouthful of jagged teeth. In the "This is Halloween" musical sequence, he is seen concealed within a trash can. Later, during the celebrations that ensue, he is spotted in the town center. In his efforts to create Christmas, he fashions hats from deceased bats and rats. Finally, he makes an appearance towards the movie's conclusion, when the unusual snowfall puzzles all the creatures.
The Undersea Gal is a female resident of Halloween Town, who appears to be a sea-creature. Her body is green and scaly with webbed hands, while fins adorn her head. She has yellow eyes and blue lips, and sometimes she wears an eye-mask when she emerges from the water. Although often perceived as a grotesque entity, the Undersea Gal lends a hand to the town's inhabitants during the Christmas preparations. Strangely enough, she discovers peculiar items in her lake, including an unidentified severed head.
As part of Jack Skellington's scheme to usurp Christmas, a savage anthropomorphic man-eating plant with the appearance of a wreath was employed, resulting in a calamity in the actual world. Jack ultimately remedied the situation by rescuing Santa Claus to assist him in undoing the harm he had caused.
Zero, a spectral dog with an appearance reminiscent of a traditional ghost, is composed of a white sheet-like material and shares Pluto's basset hound-like drooping ears. His "eyes" are vacant holes in the sheet, while his elongated and slender snout features an upward curving upper jaw. Zero sports a small luminous jack-o-lantern for a nose, similar to Rudolph's famous red nose, and a collar of faded brown hue.