Willis Acton Pyle was an American animator known for his work with Walt Disney Animation Studios, including Pinocchio (1940), Fantasia (1940), and Bambi (1942), as well as UPA's Mr. Magoo, where he co-created the iconic character, and the short film, Gerald McBoing-Boing (1950), which won an Academy Award for Best Animated Short Film in 1951. Pyle later enjoyed a long career as a freelance animator on such projects as the animated film, Raggedy Ann and Andy: A Musical Adventure (1977), Halloween Is Grinch Night (1977), several Peanuts television specials, and Cathy's Valentine.