Mary Cooper is a fictional character from the television show The Big Bang Theory. She is portrayed as the caring and supportive mother of Sheldon Cooper, one of the main characters. Mary is known for her warm personality and strong Christian faith, often providing guidance and comfort to her son. In the series, Mary is depicted as a loving and sometimes humorous figure, balancing her concern for Sheldon with her own life experiences. She often visits her son in Pasadena, California, where the show is set, and her interactions with the other characters add depth to the storyline.