The One-Eyed Mask is a distinctive helmet with a rugged, asymmetrical design featuring a single, prominent eye slit on the left side, giving it a menacing appearance. The helmet is constructed from a combination of reinforced metal and weathered leather, with a matte black finish and subtle battle scars. The right side of the mask is adorned with intricate, engraved patterns that glow faintly with a crimson hue, hinting at its dark origins and enhancing its intimidating presence.