A menacing extraterrestrial being with vast bat-like wings, a shaggy ebony torso, and elongated limbs with talon-like claws, emerges menacingly from a shadowy mist-enshrouded cavern. Its grotesque visage boasts a nightmarish mouth filled with dagger-like teeth, and its lethal, glowing ember eyes pierce through the gloom. The scene, rich in intricate detail and dark horror aesthetics, is accentuated by dynamic, dramatic lighting. The photorealistic and cinematic presentation, with fine cinematic grain, captures the alien's terrifying presence in stunning 8k resolution.