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Ubbe Ert Iwerks (March 24, 1901 – July 7, 1971), known as Ub Iwerks ( UB EYE-wurks), was an American animator, cartoonist, character designer, inventor, and special effects technician, known for his work with Walt Disney Animation Studios in general, and for having worked on the development of the design of the character of Mickey Mouse, among others. Born in Kansas City, Missouri, Iwerks grew up with a contentious relationship with his father, who abandoned him as a child. Wikipedia