He is best known as the creator and writer of several television series for both English and French networks in Canada, including Les Hauts et les bas de Sophie Paquin, Cover Girl, Sophie, Nouvelle adresse and This Life.
As an actor, he created his stage name by rearranging the letters of his surname, to distinguish himself from several other Richard Tremblays active in Quebec's creative scene at the time.
[1] He had minor roles in the television series Peau de banane, Traboulidon, Poivre et sel and Paul, Marie et les enfants, and the film Intimate Power (Pouvoir intime), before landing his most noted role as Edmond Pronovost in the drama series Les Filles de Caleb.
[10] In 2011, he sold remake rights for Le Monde de Charlotte to NBC for a series pilot titled Isabel.
Other series he has created have included Hubert et Fanny, Cerebrum and Anna Comes Home (Le retour d'Anna Brodeur).