Executives at Warner Bros. were displeased by animators using the Daffy design by Bob Clampett and demanded they use the design by Chuck Jones; in response Zemeckis had separate artists animate Daffy using Jones' design to satisfy Warner Bros. to have Clampett's design in the final film. The producers were unable to acquire the rights to use Popeye, Tom and Jerry, Little Lulu, Casper, or the Terrytoons characters for appearances from their respective owners (King Features, Turner, Western Publishing, Harvey Comics, and Viacom). Terry Gilliam was offered the chance to direct, but he found the project too technically challenging. ("Pure laziness on my part," he later admitted, "I completely regret that decision.") Robert Zemeckis was hired to direct in 1985, based on the success of Romancing the Stone and Back to the Future. Disney executives were continuing to suggest Darrell Van Citters direct the animation, but Spielberg and Zemeckis decided against it. Richard Williams was eventually hired to direct the animation. Zemeckis wanted the film to imbue "Disney's high quality of animation, Warner Bros.' characterization, and Tex Avery humor." Casting Harrison Ford was Spielberg's original choice to play Eddie Valiant, but his price was too high. Chevy Chase was the second choice, but he was not interested. Bill Murray was also considered for the role, but due to his idiosyncratic method of receiving offers for roles, Murray missed out on it. Eddie Murphy reportedly turned down the role as he misunderstood the concept of toons and humans co-existing; he later regretted this decision. Robin Williams, Robert Redford, Jack Nicholson, Sylvester Stallone, Edward James Olmos, Wallace Shawn, Ed Harris, Charles Grodin and Don Lane were also considered for the role. Ultimately Bob Hoskins was chosen by Spielberg because of his acting skill, and because Spielberg believed he had a hopeful demeanor and he looked like he belonged in that era. To facilitate Hoskins' performance, Charles Fleischer dressed in a Roger Rabbit costume and "stood in" behind camera for most scenes. Williams explained Roger was a combination of "Tex Avery's cashew nut-shaped head, the swatch of red hair... like Droopy's, Goofy's overalls, Porky Pig's bow tie, Mickey Mouse's gloves, and Bugs Bunny-like cheeks and ears." Kathleen Turner provided the uncredited voice of Jessica Rabbit, Roger Rabbit's wife. Tim Curry auditioned for the role of Judge Doom, but was rejected because the producers found him too terrifying. Christopher Lee was also considered for