High-quality 3D portrait rendering of a ghoul standing vigil at the gates of the underworld. Its skull is engulfed in an eerie, hellish glow, and its eyes emit an intense red sparkle. The ghoul boasts a slender, imposing figure with a meticulously detailed skeleton draped in tattered ancient robes. The background is alive with dynamic flames and fire, creating a dramatic and dark fantasy atmosphere. The scene is illuminated with cinematic red lighting, casting deep shadows and creating a sense of foreboding. There are no horns, excessive facial features, or text to distract from the chilling focus. The composition captures a balance of horror and elegance, with soft-focus elements adding depth to the image.