An Iron Hammer has a thin, light cyan body with blue bracelets and anklets, a yellow belt, four-fingered hands, and pale yellow and blue shoes. Its head is spherical and pitch-black with glowing, yellow eyes and a light cyan, jagged mouth. The Heartless's torso and head are enveloped in a pale yellow suit attached to an enormous, pale yellow hammerhead. Both ends of the hammer are dark steel blue, and the Heartless emblem is printed on its front tip. A long, curled, black antenna sprouts out of the top of the Iron Hammer’s helmet.