A high-quality 3D portrait rendering of a ghoul stationed as the guardian of Hell's gates, featuring a burning infernal skull with glowing red eyes. The figure has a slender, towering physique, showcasing a meticulously detailed skeleton draped in tattered rags. The background is engulfed in intricately designed flames and fire, capturing a dark fantasy horror atmosphere with dramatic, cinematic red lighting. The scene is reminiscent of an artstation masterpiece, employing soft-focus techniques and shot with a wide aperture for depth of field. The composition emphasizes the eerie and haunting presence of the ghoul without the need for additional appendages or text elements.