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Mercury's Boots are Mercury Black's weapons of choice.[1]


Mercury's weapon appears to be a large pair of boots with a firing mechanism built into them, similar to Yang Xiao Long's Ember Celica.

In "Lessons Learned", Mercury's Boots are shown to be able to fire a variety of different projectiles. Some of the projectiles are shown to have guided or target-seeking properties, taking spiraling paths towards their target. By using a fighting style akin to break-dancing or Capoeira, Mercury can fire a veritable storm of these projectiles that can overwhelm an enemy with sheer volume. Some projectiles also appear to create a smoke or steam effect that can be used to distract or damage enemies.

Mercury also uses the boots to absorb or block a very powerful hit from Yatsuhashi Daichi's sword with very little damage. He can also use the Boots to jump in midair.

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Mercury firing a blast from his prosthetic legs

"Beginning of the End" reveals that Mercury actually has prosthetic legs. In one scene, his prosthetics are shown capable of firing projectiles like his boots, despite the fact that no ammunition or barrels are visible on the prosthetics. It appears that his prosthetics are responsible for the air blasts that he fires, while his boots are responsible for the bullets he fires.


  • Mercury's Boots are likely a reference to the winged sandals characteristic of the Roman god, Mercury.