From Team Fortress Wiki
The Grimm Hatte was contributed to the game via the Contribute! page, under the name "Grimm Gravedigger."
- The Grimm Hatte was added to the game.
- Updated the Grimm Hatte with changes from the community creator.
- The alpha texture for this hat shows a splotch of blood. This texture is incorrect, and is a remnant of a bloody style also submitted for the hat. 
- "Grimm" is a reference to the Brothers Grimm, who wrote tales centered around death.