Michael Keaton is an American actor that started his career with roles in sitcoms and comedic films. He was just rising to fame when he gained more recognition after playing Batman in Tim Burton's movies. The actor was paid $5 million for the first Batman movie and $10 million for the second. A third movie should have been filmed, and this time, Michael Keaton would have been paid $15 million.

But he turned down the money and the reason is very simple: he didn't like what he had read in the script. Michael Keaton liked the previous movies, which had a darker tone, but Warner Bros. weren't satisfied with the second movie's earnings, so they thought the film should be more light-hearted. So, money couldn't have fixed the problem for Michael Keaton here.