For Disney, he voiced adult Tod in the 1981 Disney animated film The Fox and the Hound, and played the role of Lampie in the 1977 film Pete's Dragon. In Flubber, he made a cameo appearance on Weebo's screen. He also played Movie Mason in the 2000 Disney Channel Original Movie Phantom of the Megaplex, and the voice of Sparky in the 2001 direct-to-video film Lady and the Tramp II: Scamp's Adventure, as well as a Smalltown resident in the 2011 film The Muppets. He also played Old Bailey and James Turner in Walt Disney's Wonderful World of Color.
In 1939, he was caricaturized by Disney himself in the Donald Duck short, The Autograph Hound. Mickey Mouse was named after him. Rooney was one of the many voices of Oswald the Lucky Rabbit during the character's run at Universal Studios. He is the subject of a myth that Walt Disney actually named Mickey mouse after Mickey Rooney. Rooney himself perpetuated this myth, but Mickey's name was actually his wife, Lilian's idea.