Hatsune Miku, devil, large wings, black high-cut swimsuit, long boots A mecha design of a justice-seeking combat robot, with a heavy full-armor chassis featuring boxy angular frames and exposed cables, caterpillar tracks as legs, a cylindrical head sensor that glows as it locks onto a target, wielding a beam-edged chainsaw weapon that sprays sparks as it slashes, 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 the scarred armor, presented in a cinematic dynamic angle, with intense amber sunset lighting casting long shadows, exuding gritty realism and kinetic energy, and featuring volumetric sandstorm particles mixing with sparks and smoke.