A space marine stands majestically against the bright midday sky, their formidable armor blending seamlessly into futuristic organic designs reminiscent of H. R. Giger. The intricate detail of the biomechanical elements shimmer subtly under the sun’s rays, casting deep, dramatic shadows across the marine's resolute face. In the style of a masterful oil painting by Rembrandt, the portrait captures an intense play of light and shadow, with rich, warm tones accentuating the marine’s determined expression and the textures of their intricate armor. The background is softly blurred, suggesting an otherworldly yet noble landscape. Subtle energy emanates from the figure, hinting at a mysterious power within.