Imagine a sleek, futuristic Halloween-themed mecha with a sophisticated and elegant design. At its core, a glowing, carved pumpkin-like head is detailed with sharp, angular lines, illuminated from within by a soft orange glow. Its armor is crafted from smooth black and silver metal, with neon orange lights tracing intricate, refined patterns along its limbs and torso. The mecha's jet boosters are inspired by bat wings, and it wears a cape that flows like ethereal digital smoke. Its hands, equipped with sharp, polished claws, grasp a scythe that hums faintly with energy. The overall aesthetic is a balance of mechanical power and Halloween-inspired artistry, combining clean lines, high-tech design, and a sleek, polished finish for a modern, haunting look.