The Plated Fists (メッキ拳 Mekki Ken) are the name of the two brass knuckles Spike of The Jolly Pirates uses. Spike only uses his Plated Fists when the situation calls for them; mostly when a stronger opponent rears their ugly head or when Spike feels the need to give it his all. The Plated Fists are made of a highly valuable metal known as Eve Steel, the metallic counterpart to Adam Wood. Since Eve Steel is considered this, it only means that the metal is the most durable in the world, and very expensive.