Demy started as a young actor in Agnès Varda's films L'une chante, l'autre pas, Documenteur, Mur Murs and Kung Fu Master. Demy's work as an actor ranges from romantic comedy to drama. His breakthrough came in 1998, when he was cast as Olivier, a young man with AIDS, in the musicalJeanne et le Garçon formidable, directed by Olivier Ducastel and Jacques Martineau. In 1999, he started a company, Les Films de l’Autre, to produce his own short films. He produced and directed in 2000 his first film, Le Plafond, adapted from a short story by Tonino Benacquista. The film received the audience award at the Angers film festivalFestival Premiers Plans and the Uppsala International Short film Festival, and additional awards in Pantin, Rennes, Dignes and Mamers. In 2001, Demy worked for director Benoît Cohenfor the first time in the film Les Acteurs anonymes. They reunited for Nos enfants chéris, in which he played Martin, a 30-year-old who meets his great love again just as he's about to become a father. In 2001, Demy received the best actor award at the Festival de Paris for Quand on sera grand directed by Renaud Cohen. The Festival Européen Cinessone awarded him twice for acting: in 2003 for Mister V. by Émilie Deleuze and in 2004 for Le Silence by Orso Miret. In 2005, Les Films de l’Autre produced Demy’s second short film, La Bourde, an experimental comedy. Demy reprised his role as Martin for the TV adaptation of Nos enfants chéris, which aired on Canal+ in 2007-2008. He was cast by Pascal Bonitzer for Le Grand Alibi and worked twice for Philippe Barassat, in Folle de Rachid en transit sur Mars and in Lisa et le pilote d’avion. In 2009, he also starred in André Téchiné's La Fille du RER and in the television drama Mes chères études, directed by Emmanuelle Bercot and dealing with a students' prostitution. In 2011, Demy appeared in Céline Sciamma's Tomboy and was cast as the lead in the romantic comedy L'Art de séduire by Guy Mazarguil. The same year, Demy wrote, directed and produced his first feature film, Americano. Demy also stars in the film along with Salma Hayek and Geraldine Chaplin. Since 2012 Demy has continued to act in films such as "Les Conquerants" by Xabi Molia or "My little One" by Frédéric Choffat and Julie Gilbert. Demy has also been involoved in French television shows such as Eric ROchant's multi-awarded "Le Bureau des Légendes" for which he directed two episodes in season 1 and 3 episodes in season 3. Demy also had a part in the show as "Clément Migaud", Marie-Jeanne's lover Since 2019 Demy stars in "Mytho" along with Marina Hands. The show was created by Anne Berest and Fabrice Gobert and was broadcast on Arte, whetre it gathered 2 million views, and available on Netflix for the international audience. The shooting of season 2 will be stating at the end of January 2020.
