The Joker stands before a shattered mirror, jagged shards reflecting fragments of his chaotic visage, set in the ominous atmosphere of Gotham's underworld. In the style of Christopher Nolan, the scene is enveloped in a shadowy ambiance, where darkness and horror intertwine. Dramatic lighting casts eerie shadows across his scarred face, revealing highly detailed textures and hidden nuances. Each colorful fragment of the broken glass captures a different emotion, creating a tapestry of colorful realism. The hyper-realistic portrait showcases the Joker's maniacal grin with meticulous attention to detail, rendering an unsettling yet mesmerizing wallpaper-worthy image. The vibrant hues contrast sharply with the oppressive darkness, capturing the essence of madness in stunning UHD 8K resolution.