metal skull cyborg 3d-render portrait

[metal skull cyborg] in a tight 2:3 portrait crop, filling roughly 60 percent of the frame with the head and upper torso occupying the center-right third and the lower chest cropped at the bottom edge of the image. The subject is shown in a [three-quarter view] slightly tilted and looking forward, with generous negative space in the left third and the background occupying the upper third as a moody, desaturated atmosphere. Rendered as a polished [3d-render] with realistic metallic surfaces and visible mechanical features, the subject shows crisp mechanical joints, layered plates, and engineered cavities while avoiding species-specific anatomy words. Lighting is a soft directional key from the upper-left with cool fill from the right and warm rim highlights on the left edge to sculpt forms and produce deep yet readable shadows. Textures read as brushed steel, matte fabrics for the hood, and subtle surface wear with tiny scratches and faint etched marks on the metal surface. Keep a shallow depth of field so the subject is sharp against a gently blurred background, and preserve the 2:3 aspect ratio and original framing for poster reproduction.