Willy Wonka May 2003, Burton immediately thought of Johnny Depp for the role of Willy Wonka, who joined the following August for his fourth collaboration with the director. Burton and screenwriter John August worked together in creating Wilbur Wonka, Willy's domineering dentist father. "You want a little bit of the flavor of why Wonka is the way he is," Burton reasoned. "Otherwise, what is he? He's just a weird guy." Warner Bros. and Burton held differences over the characterization of Willy Wonka. The studio wanted to make Willy Wonka the idyllic father figure Charlie Bucket had longed for his entire life. Burton
Charlie and the Chocolate Factory (film) to help Wonka confront and reconcile with his estranged father; Wonka finally realizes the value of family, while his father learns to accept his son for who he is, and not what he does. In the end, Wonka finally allows Charlie's family to move into the factory. Author Roald Dahl disapproved of the 1971 film adaptation and declined the film rights to produce the sequel, "Charlie and the Great Glass Elevator". Warner Bros. and Brillstein-Grey Entertainment entered discussions with the Dahl estate in 1991, hoping to purchase the rights to produce another film version of "Charlie and the Chocolate Factory".