Robert Cornthwaite's journey in acting began at the tender age of 13, when he was unexpectedly thrust into the spotlight, forced to recite a single line in an eighth grade play. This initial foray into the world of acting sparked a flame that would burn brightly throughout his life. Five years later, in 1935, Cornthwaite had the opportunity to work alongside professionals in a production of "Twelfth Night" on the Reed College campus in Portland, Oregon.
Before entering the world of show business, Cornthwaite worked in radio in Southern California, honing his skills and building his experience. However, his plans were put on hold when he was inducted into the Air Force during World War II, a four-year commitment that would take him away from the spotlight.
After his military service, Cornthwaite returned to Hollywood, where he resumed his career in radio before transitioning to feature films and television. As he worked his way up the ranks, he began to establish himself as a character actor, known for his versatility and range.
Despite his success in both film and television, Cornthwaite has always maintained a deep love for the theater. He believes that the stage offers a level of freedom and creative expression that is unmatched in other mediums. For Cornthwaite, the theater is "far more liberating for the actor," allowing him to fully immerse himself in his characters and bring his performances to life in a way that is truly unique.