A graduate of the Professional Theater School of Collège Lionel-Groulx, Marc-André Trépanier knew he would be an actor by learning by heart the lines of his favorite childhood films. He came into contact with the theater at the age of six and decided a few years later to get involved in television and film. As a child, he accumulated projects and began his apprenticeship on different film sets.

Right out of school, he co-wrote and performed Phoenix, a collective creation presented as part of the Montreal St-Ambroise Fringe Festival. He joins the Théâtre du 450 in La ballade de Robin des Bois and participates in the ZH Festival with Le corps d'or. He regularly works in partnership with SODECT for various historical theater events in which he is co-author and performer. He is part of the Théâtre de Quat’Sous troupe, a project put forward by Mani Soleymanlou and Olivier Kemeid.

Marc-André is constantly developing his personal projects; he writes, translates and stages several texts and creations. His enjoyment of the game has no limits, both on stage and on screen.