Team Fortress 2 is one of the game with many mods from the Steam Workshop , Steam Workshop have loads of mods and game assets some are amazing some are just whacky.
A skin made by users retro~, donhonk, and void~, which is actually a headgear wearable for the heavy class and it has a face of Gabe Newell himself. The cteaters are very good at what they do and have a workshop with lots of items made for the games.
This skill is called The Big Boss and it comes with hair colors to chose from and has a Valve’s Gold star which indicates that the item follows the company’s standards.
You can download it from the link above or you can have a look at the below images