The Unknown Monkeynaut is a community-created misc for all classes. It is a jiggleboned ghost of one of Mann Co.'s monkeynauts that hovers behind the user.
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 Unknown Monkeynaut was originally contributed to the Steam Workshop under the name "Spooky Joe".
October 26, 2012 Patch (Spectral Halloween Special)
- The Unknown Monkeynaut was added to the game.