From Team Fortress Wiki
The Brainiac Hairpiece is a miscellaneous item for the Engineer. It is a set of mutton chops, and features a frizzy white hairpiece and mustache. The item was named the "Maths-Enhancing Hair-Do" in promotional materials on the Australian Christmas 2011 update page on the TF2 Official Website and the Weta Workshop website.
|Dr. Grordbort's Brainiac Pack|
- The Brainiac Hairpiece was added to the game.
- [Undocumented] The Brainiac Hairpiece was changed to a hat.
- Reverted back into a miscellaneous item.
- The item no longer hides Engineer's default helmet.
- Removed hat equip region.