A robot wrapped in lightning, with sparks of lightning surrounding it. It has a black metallic body with glowing blue lines. Sabers are attached to the sides of its arms. It has large mechanical wings on its back. A robot surrounded by sparks of lightning, with lightning wrapped around it. It has a black metallic body with glowing purple lines. Sabers are attached to the sides of its arms. It has large mechanical wings on its back, one above the other. Make a robot dragon flying in the sky at night in a realistic style