A high-quality 3D portrait rendering of a ghoul standing sentinel at the gates of Hell, featuring a blazing skull with intensely glowing red eyes. Its slender, towering form showcases an intricately detailed skeleton wrapped in tattered rags. Dramatic flames and fire engulf the background, creating a dark fantasy horror ambiance with vivid red, cinematic lighting. The atmosphere captures an artful balance of soft-focus with a shallow depth of field, amplifying the ominous scene for a striking visual effect.