Warner Bros.’ decision to cast Michael Keaton as Bruce Wayne triggered a remarkable fan backlash before the film had even been released. By 1988, Keaton was strongly associated with comedies such as Mr. Mom, Night Shift, and Beetlejuice, and comic-book readers feared that Tim Burton’s Batman would become another version of the campy 1960s television series. The studio reportedly received approximately 50,000 protest letters, while Batman writer Sam Hamm, co-creator Bob Kane, and producer Benjamin Melniker were among those who questioned whether Keaton could carry a serious, psychologically damaged version of the character.
The choice had originated with producer Jon Peters, who saw an “edgy, tormented quality” in Keaton’s dramatic performance in Clean and Sober. Burton, who had just directed Keaton in Beetlejuice, agreed with Peters and defended the casting. Keaton responded to the skepticism by studying Frank Miller’s The Dark Knight Returns for inspiration, using its gaunt, brooding interpretation of Bruce Wayne as a counterargument to his established comic persona. The controversy ultimately became part of the film’s mythology: the actor many fans assumed was incapable of playing Batman delivered a performance that, alongside Nicholson’s Joker, helped redefine the character for mainstream Hollywood.
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