I picked Retta Scott because she was a female animator, which is remarkable for her time. She also was the first women to earn screen credit at the Walt Disney Studios.
At Disney’s studio, women were only considered good enough for such routine duties as ink and paint work. It wasn’t until 1938 that Retta Scott became the first woman to receive a Disney screen credit for her work on Bambi. Even though women do work in all branches of the industry now, Hollywood still has a glass ceiling that is very hard for women to break through, and very few women ever get the opportunity to direct an animated feature.This is why I think Retta Scott is an animation pioneer.