A mecha design of a justice-seeking combat robot, with a heavy full-armor chassis, boxy angular frames, and exposed cables. It has caterpillar tracks for legs, a cylindrical head sensor that glows as it locks onto a target, and wields a beam-edged chainsaw weapon that sprays sparks when slashing. It is equipped with an anti-missile catapult and a thick shield, soaring over a swirling sandstone desert under a dramatic overcast sky. Dust and oil stains are visible on its scarred armor. The shot uses a cinematic dynamic angle, with intense amber sunset lighting casting long shadows. It exudes gritty realism and kinetic energy, with volumetric sandstorm particles mixing with sparks and smoke. In golem.