Scarecrow

The Scarecrow is a character in the fictional Land of Oz created by American author L. Frank Baum and illustrator W.W. Denslow. In his first appearance, the Scarecrow reveals that he lacks a brain and desires above all else to have one. In reality, he is only two days old and merely naïve. Throughout the course of the novel, he proves to have the brains he seeks and is later recognized as "the wisest man in all of Oz," although he continues to credit the Wizard for them…Wikipedia