Carmillo is a tall and slender, light gray-skinned demon. He sports white shoulder-length hair with bangs and black streaks, usually formed in the shape of large horns by black thin ribbons. He has a darker-colored area that appears similar to a mask on his face, which is around his slanted-eyes have white irises and red sclera. The rest of his arms and hands are colored white, with his hands being rather large in proportion to his body with black nails protruding from them. Tall yet lean body.