From Team Fortress Wiki
The Bolgan is a promotional headwear item for the Demoman. It is a horned helmet carved from wood, with brass trim. The helmet is carved as such that it covers his left eye, and is similar to the ones worn by Bolgans, a race of war-like ogres from the game Kingdoms of Amalur: Reckoning.
- The Bolgan was added to the game.