El Mostacho is a community-created cosmetic item for the Engineer. It replaces the Engineer's default hardhat with a worn out, paintable dark hat with a big, damaged brim, a band with a team-colored triangles pattern, and a gear emblem on the front. It also gives him a large gray mustache that moves with the player's movements.
El Mostacho was contributed to the Steam Workshop.
- El Mostacho was added to the game.