High quality 3D portrait rendering of a ghoul standing guard at the entrance to the underworld, featuring a fiery skull with glowing ember-red eyes. Its elongated, skeletal frame is shrouded in tattered cloaks. Richly detailed blazing infernos fill the background, casting flickering shadows that accentuate a dark fantasy horror theme, bathed in dramatic crimson and cinematic lighting. Features such as highly detailed flames serving as the backdrop create an intense atmosphere. The realism is further enhanced by a soft-focus effect set with an f/2.2 aperture. The art captures a mystical aura reminiscent of top-tier creations shared on platforms like ArtStation, emphasizing an immersive visual experience.