Veteran animators Frank Thomas and Ollie Johnston were assigned as directing animators over the three good fairies: Flora, Fauna and Merryweather. Walt Disney urged for the fairies to be more homogeneous, which Thomas and Johnston objected to, with Thomas stating they "thought 'that's not going to be any fun'. So we started figuring the other way and worked on how we could develop them into special personalities." John Lounsbery animated the "Skumps" sequence between Kings Hubert and Stefan. Chuck Jones, known for his work as an animation director with Warner Bros. Cartoons, was employed on the film for four months during its early conceptual stages when Warner Bros. Cartoons was closed when it was anticipated that 3-D film would replace animation as a box office draw. Following the failure of 3-D, and the reversal of Warner's decision, Jones returned to the other studio. His work on "Sleeping Beauty", which he spent four months on, remained uncredited. Ironically, during his early years at Warner Bros., Jones was a heavy user of Disney-style animation until Tex Avery got Warner out of the Disney style. Another notable animator who worked on the film for part of its production was Don Bluth, who worked as an assistant animator to Lounsbery. Bluth would leave after two years but eventually came back in the 1970s.