Harry Potter in the dungeon, surrounded by an eerie atmosphere, the walls glistening with moisture, highly detailed textures creating a photorealistic effect. The dynamic light casts elongated shadows, accentuating his iconic glasses that glint menacingly in the dim glow. An extreme nightmare vision unfolds, blending elements of the mystical and magical with a profoundly creepy ambiance. Inspired by the surreal and biomechanical touches of H. R. Giger, the fantastical intricacies reminiscent of Jean Ansell's work, and the enchanting yet haunting style of Justin Gerard, the scene pulsates with an uncanny life, as if the dungeon itself breathes in the shadows, creating an immersive, otherworldly experience.