A colossal robot towers against a stormy sky, its metallic surface gleaming under flashes of lightning. With a fierce roar, it channels a pulsating blue energy beam from its outstretched arm, illuminating the battlefield with an otherworldly glow. The ground trembles as the beam pierces the clouds, crackling with raw power, while the distant silhouettes of skyscrapers loom, emphasizing the sheer scale of this mechanical behemoth.