Metallica

Metallica (メタリカ) is the stand of Risotto Nero featured in Part V: Vento Aureo. It is named after the American thrash metal band | Metallica.

Powers
Iron Manipulation: Metallica manifests itself inside Risotto's body as a swarm of small beings, which have the ability to manipulate iron with magnetism. The most prominent function of this ability is to manipulate the iron in a target into sharp objects to damage him severely from the inside. This is shown when Doppio has tried to rush Risotto, only to get a face full of needles created from the iron within his blood. Even if the attack does not prove fatal, the anemia caused by lack of iron in the blood will be. Metallica can also use iron to heal its user, such reattaching Risotto's foot by turning his iron into staples and locking the foot back into place. Metallica can also manipulate iron from other objects, such as forming knives from the iron within the earth.

Light Refraction/Invisibility Metallica also has the added bonus of being able to wrap itself around Risotto's body, causing him to blend into the background and making him effectively invisible.