Highly detailed, imposing mecha with one arm replaced by a massive, earth-elemental hammer, featuring rocky textures and cracks with glowing veins to evoke a natural, grounded power. The mecha has intricate metallic armor with layered plating and gears, contrasting with the rugged hammer. Set against a black background with soft, dynamic shadows that give depth and a realistic look. Highlights and reflections accentuate the metallic surfaces, and the hammer appears as if made from rock and soil, embodying the essence of earth.