He succeeded MacDonald, who in 1947 had taken over from Walt Disney himself, who had performed the role since 1928 as well as supplying Mickey's voice for animated portions of the original The Mickey Mouse Club television show (ABC-TV, 1955–59).
Han efterfulgte Jimmy MacDonald, der i 1947 havde overtaget efter Walt Disney selv, som havde udført rolle siden 1929, og leverer Mickey's stemme til den animerede dele af den oprindelige Mickey Mouse Club tv-show (ABC-TV, 1955-1959).