Thankfully I already don't remember this.
— The Demoman on his journey to Yeti Park
The Monstrous Memento is a cosmetic item for all classes. It is a white cap with the Yeti Park logo in the front.
This hat is unlocked by completing and turning in the "Free For All" contract from the Jungle Inferno Update.
October 20, 2017 Patch (Jungle Inferno Update)
- The Monstrous Memento was added to the game.
- Sometimes the Monstrous Memento will not retain the original material file and instead appear as full-on white, blue, yellow, black, or pink. That happens because the item is incorrectly set up as a paintable item while it is not.