Zero is Jack's ghost-dog who serves as the tritagonist of Tim Burton's The Nightmare Before Christmas and the titular protagonist of the graphic novel sequel Zero's Journey.



Zero has a glowing pumpkin nose, (which glows red) an obvious Halloween pun of Rudolph the Red-Nosed Reindeer. Zero helps guide his master Jack Skellington through the fog on Christmas Eve. Zero has a doghouse gravestone in the graveyard seen before Jack enters the Hinterlands.