automail (prosthetic arm)
May. 30th, 2025 06:51 pm
As of August, Katsuki will have a new robotic arm made for him by Winry from Fullmetal Alchemist. It's specifically referred to as an "automail", the same kind of metal prosthetic that Edward Elric has.
His arm has two main functions/weapons:
1. Gun installed in the underside of arm. Can hold four bullets. Chamber is shown with a glass window because it looks cool.
2. Explosion triggered in the palm of hand. Works similarly to Katsuki's Grenade Gauntlets. His arm has two tanks that jut out of the shoulder, which connect by tube inside of the arm to the palm. These tanks he can remove, and also needs to remove in order to fill them with his sweat. Filling them takes hours, and they're used as last resorts because of this. But his sweat is infused with nitroglycerin and explodes when ignited.
Each tank has a piston on the top that when triggered, uses force to push the sweat out of his palm. At the same time, a mechanism is hidden in his hand that ignites a small flame thus causing the sweat to explode. It shoots out a giant fireball as a result. And since he has two tanks, he has two times that he can use this mechanism.
