In my opinion, this hair has a striking simmilarity with the hair of Handsome Jack [borderlands.wikia.com] from the Borderlands Franchise . Valve has allready added a mask that resembles Handsome Jack, the Dapper Disguise . It is optained by getting CL4P-TP/Claptrap's bounty item in "Poker Night at the Inventory 2" . The only class that can use the Dapper Disguise, is the spy.

I think that this hair should be for Spy aswell, as it would be fitting to litterally make him into a complete Handsome Jack. So if you combined this cosmetic with the Dapper Disguise, you would litteraly become the most handsome rogue of them all!