Zero is a ghost dog from the 1993 Henry Sellick directed film, Tim Burton's The Nightmare Before Christmas. He appears several times in the seasonal Haunted Mansion Holiday overlay and its Tokyo Disneyland counterpart.
Zero is the pet ghost dog of Jack Skellington and has a glowing jack-o-lantern for a nose. Near the film's third act, Zero becomes the film's Rudolph stand-in who uses his nose to help Jack's sleigh navigate through a heavy fog on Christmas night.
Haunted Mansion Holiday
Zero's first notable appearance is in the Portrait Corridor where he is capable of floating from one portrait to another, illuminating them with his nose. He also appears within a changing portrait as being the head of Jack's sleigh-team when it changed from being a portrait of Santa Claus's sled.
In the attic, a portrait of Zero and Jack as Sandy Claws can be seen where Constance Hatchaway is for the rest of the year.
Zero makes many of his same appearances in Haunted Mansion Holiday Nightmare at Tokyo Disneyland, with one more appearance. He can be seen in the library, decorating a Christmas tree of books with white garland.
Zero can be seen on the Nightmare Before Christmas float in the Frightfully Fun Parade during the Halloween season at Disneyland and Disney's California Adventure.
In the Disney's Not So Spooky Spectacular nighttime show at the Magic Kingdom, Zero guides Mickey Mouse and his friends through a haunted house.
- Zero is referenced in Shanghai Disneyland's Camp Discovery. In a newspaper dated to 1930, there are reports of a, "Spectral Dog" seen around the Haunted Mansion specifically during the four months surrounding the holiday season.