The Mad Mask is a community-created cosmetic item for the Heavy. It is a metal, skull-shaped mask with leather straps, which partially wraps around the Heavy's head. The mask leaves the Heavy's eyes uncovered.
The Mad Mask was contributed to the Steam Workshop.
- The Mad Mask was added to the game.
- This item is based off the mask worn by Lord Humungus, the main antagonist of Mad Max 2: The Road Warrior.
- The item's name is a pun based off of Mad Max, the main protagonist of the Mad Max series.