From Team Fortress Wiki
The Crafty Hair is a promotional headwear item for the Scout, Soldier, Medic, Heavy, and Engineer. It is a blonde hairpiece sticking straight up with the top flattened down. The Crafty Hair is modeled after one of the male soldiers' hairstyles in the PC strategy game X-COM: UFO Defense, known as UFO: Enemy Unknown outside of North America.
The Crafty Hair has two styles, aptly titled "Yellow" and "Brown". Yellow, the default style, colors the hairpiece blonde, while "Brown" colors the hairpiece brunette.
- Added Crafty Hair to the game.
- Fixed the Crafty Hair not using styles for the yellow and brown hair.
- [Undocumented] The Crafty Hair is now tradable, craftable, and able to be used in crafting.
- The hat's name is a pun on the name of Guile, a character from the Street Fighter franchise who has an almost identical hairdo - one of the possible meanings of "guile" is "clever or crafty character or behavior".