He starts his career very young. Aged 17, he is already working for the newspaper Regio 7. While studying Fine Arts, he publishes his works in magazines like El Vibora and Totem. He publishes the series Emilo/a in Puta Mili magazine as he works for various fanzines. In 1995 he begins his series La Parejita for El Jueves magazine and wins the Best Script award at Barcelona's Comics Festival. In 1996 he writes A vie de Saint for Fluide Glacial magazine. In 1997 he starts, with Monteys
, Para ti que eres joven. He is the director of El Jueves for almost four years, while he publishes through Glenat other works like Mantecatos (Best Comic award at Barcelona's festival) and Rosenda y otros momentos pop. Glenat also publishes Super Puta, an experimental comic. Fontdevila made it using "automatic writing" (or psychography), a technique mainly used by Andre Breton and the surrealist authors in wich the writer lets his thoughts flow without trying to control them. The writing is supposedly produced from a subconscious and/or spiritual source without conscious awareness of the content. In 2006, Fontdevila quits Regio 7, for wich he worked since the beginning of his career, and starts colaborating with the newspaper Publico and El Manglar magazine.