Like two old friends who happen to have razor sharp edges, Whirlwind's axes have been with him a long time. According to their engravings, they're called "Left" and "Right", though some suspect the names to be little more than a mnemonic. Whirlwind simply thinks of these axes as "The Twins" and considers them his most valuable and possibly only possessions. They may lack an epic history, but in Whirlwind's hands they're unquestionably deadly.
The Black Whirlwind's weapons can harm spirits.