Antoine Doinel is a fictional character created by French film director François Truffaut. Doinel is to a great extent an alter ego for Truffaut, sharing many of the same childhood experiences, looking somewhat alike and even being mistaken for one another on the street. Although Truffaut did not initially plan for Doinel to be a recurring character, he eventually returned to the character in one short-subject and three full-length films after introducing him in his debut feature, The 400 Blows. In all, Truffaut followed the fictional life of Antoine Doinel for over 20 years.