Why not Michael Keaton & Billy Dee Williams?
In the 1989 Batman film & Batman Returns, Michael Keaton plays Batman, but yet in Batman Forever & Batman & Robin, he's aplayed by someone different. Why is this? Why was the actor changed? Also, in the original Batman film, Billy Dee Williams plays Harvey Dent, but yet, Tommy Lee Jones acts as Two Face in Batman Forever. Why is this? How come they don' use the same actors? Please answer if you know the answer.