The Zippertile is an NPC found in the Number World. It is located in the southeast corner of Number World, to the right of the door with 0's and 1's in front of it.
Description
The Zippertile is a wall decoration that is similar in appearance to a zipper. It has a blue head with a white and pink "body". It has a white, open mouth on its face while having a black right eye and a pink left eye. Two orange appendages sprout from the sides of its head: a leg from its right and an arm from its left.
Usually, its appearance is the same as the other wall decorations in Number World, having a smile on its face. If it has a happy appearance, the player is advised to wake up and return repeatedly until it changes. Occasionally, the face will have an unhappy expression with an open mouth. Interacting with it while it is in this state causes it to briefly move its mouth and make a sound.
Zippertile is one of the few NPCs that the player has to use the Knife on to access a new area, in most cases the Cat is enough to move a character.
When using the Knife on it in this state, it makes a surprised expression and opens its zipper to reveal a hole that gives entry to the The Stairway, where KyuuKyuu-kun can be found. Their mouth then smiles again and oozes a red liquid that borders the entry hole.
Entering the hole reveals that part of them can still be seen from the other side, however with some slight changes. The left eye is now round, not square and they seem to possess a small pink nose.
It does not react to any other effects, however as it screams when the Knife effect is used, it is considered "alive" and not just a wall decoration. Not only that, but interacting with it in its unhappy state causes its mouth to move and make a sound.
Gallery
Zippertile in its unhappy state in the game
The sprite sheet in the characters folder of the game
The change of expression when using the Knife on them
