Stephanie Lemelin. Actress: Young Justice. Stephanie Lemelin is a versatile actress appearing in both TV and film, comedies and dramas, and lending her unique voice to many cartoons, movies, video games, and commercials. In 2007, she also co-wrote and produced two movies with the company In-Motion Pictures. Stephanie began acting professionally soon after moving to L.A. in 2001, following her graduation from the University of Pennsylvania, where she majored in Communications...