Ub Iwerks
Disney and Iwerks often had differences. As a result of this differences, Iwerks left Disney in 1930 and founded his own studio. It closed in 1936, after that, Iwerks worked some months for Columbia Pictures, in 1940 he went back to Walt Disney. He did not draw anymore, but became the head of the "Special Processes Department". There he invented the Multiplane camera. For this camera he was awarded in 1960 with a special Oscar.