Guy DecombleGuy Decomble (1910–1964) was a French film and television actor. A character actor he played in a number of supporting parts in postwar cinema. One of his better known roles is as the teacher in The 400 Blows by François Truffaut.FilmografiThe 400 Blows (1959)The Cousins (1959)Inspector Maigret (1958)Bob le Flambeur (1956)Jour de fête (1949)