Wallpaper portrait of a legendary ghost knight, powerful, invincible, unstoppable, brutal, epic composition, digital painting, dramatic, gloomy, emotionally profound, volumetric lighting, intense and brooding dark tones, leaving an indelible and haunting impression on psyche, high quality, high resolution, ethereal sheen, spectral glow, masterful detailing, haunting ambiance, mysterious presence, atmospheric depth, striking and unforgettable image.