1. Sterling Holloway
Characters he voiced:

Mr. Stork (Dumbo 1941)
Adult Flower (Bambi 1942)
Prof Holloway (The Three Caballerros 1944)
Cheshire Cat (Alice in Wonderland 1951)
Winnie the Pooh (Winnie the Pooh and the Honey Tree 1966)
Kaa the snake (The Jungle Book 1967)
Roquefort the mouse (The AristoCats 1970)

He was also the narrator for Mickey and the Beanstalk in case you weren’t convinced he is a true Disney treasure.