As a writer, Lefred Thouron has collaborated with Yan Lindingre on « Les carottes sont crues », a spoof on the "organic" craze, has brought back to life "The Adventures of Super-Dupont" with Gotlib and Solé in the magazine Fluide Glacial, and above all, has worked with Diego Aranega to produce « Casiers Judiciaires », slices of life in a provincial courthouse, recently published as a collection by Dargaud.