Mickey’s Rival (film) Mickey Mouse cartoon; released on June 20, 1936. Directed by Wilfred Jackson. Mickey’s rival, Mortimer, strives for Minnie’s affections on an afternoon outing. As he woos Minnie, he plays practical jokes on Mickey and even his car threatens Mickey’s car. But, when Mortimer is responsible for a bull attacking, it is Mickey who finally rescues Minnie, while Mortimer runs away.