What happens to the Clown Prince of Crime when his straight man retires? He goes catatonic. When he sees Batman’s return on TV, the Joker "wakes up." Miller’s Joker is a grotesque, terrifying force of nature—a man so addicted to the conflict that he slaughters the audience of a talk show just to get Batman’s attention. Their final confrontation is not a battle; it is a mutual suicide pact that defines their toxic co-dependence.

In this world, Superman is a government lapdog. Having submitted to President Reagan’s orders, Clark Kent works for the CIA, enforcing foreign policy on behalf of the establishment. He represents "lawful evil"—a good man who has sacrificed his conscience for the sake of order. The conflict between Batman and Superman is the ideological heart of the book: