Brian Azzarello's 'Joker' is a standalone graphic novel that provides a dark, realistic, and brutal look at Batman's greatest foe. The story is uniquely told from the perspective of Jonny Frost, a low-level henchman hired to be the Joker's driver upon his release from Arkham Asylum. Readers witness the Joker's violent and meticulous reconquest of his criminal empire in Gotham, clashing with iconic villains like Penguin and Two-Face. This is not a superhero story but a chilling crime noir thriller that delves into the terrifying reality of a psychopath's world, making it a must-read for mature audiences.