This item can only be worn around Halloween or during a Full Moon; at other times of the year, it does not appear in gameplay, unless the server has Halloween mode enabled. However, it can be equipped at any time and can still be viewed on the loadout screen even when it is not visible during games.
The Zipperface was contributed to the Steam Workshop under the name "The Boned-Appeal".
- [Undocumented] The Zipperface was added to the game.
- Pow-zoop! Zipperface! in the item's description is a reference to some of the Bombinomicon's voice responses.