Wallpaper portrait of a legendary ghost knight, formidable and untouchable, exuding power and fierceness, epic and breathtaking composition, digital painting, atmospheric and dramatic, emotionally charged with profound depth, enveloped in volumetric lighting, dark and intense tones that leave a haunting imprint on the mind, high-quality high-resolution depiction, absent of duplicates, skillfully rendered anatomy and limbs, free of text, names, signatures, watermarks, ensuring superior quality with no jpeg artifacts.