Daffy Duck first appeared in "Porky's Duck Hunt", released on April 17, 1937. The cartoon was directed by Tex Avery and animated by Bob Clampett. "Porky's Duck Hunt" is a standard hunter/prey pairing, but Daffy (barely more than an unnamed bit player in this short) was something new to moviegoers: an assertive, completely unrestrained, combative protagonist.

Frederick Bean "Tex" Avery (February 26, 1908 – August 26, 1980) was an American animator and director, known for producing and directing animated cartoons during the golden age of American animation. His most significant work was for the Warner Bros. and Metro-Goldwyn-Mayer studios, where he was crucial in the creation and evolution of famous animated characters such as Bugs Bunny, Daffy Duck, Porky Pig, Elmer Fudd, Droopy, Screwy Squirrel, George and Junior, and Chilly Willy.

More Info: en.wikipedia.org