Laurie Metcalf as Mary Cooper
Laurie Metcalf played the role of Mary Cooper, Sheldon’s caring mother who possesses a unique understanding of her son. Throughout the series, Sheldon’s friends often seek Mary’s advice and help in dealing with his peculiarities. Her first on-screen appearance was in season one after Sheldon is fired from his job for his disrespectful attitude towards his boss. As a devout born-again Christian, Mary serves as a voice of reason when it comes to Sheldon’s baffling behavior. Despite her unconventional home remedies and advice, she is a loving and supportive mother to “Shelly.” While not a series regular, Mrs. Cooper has either appeared or been referenced in every season of The Big Bang Theory. Fans are also able to learn more about her backstory through the spin-off series, Young Sheldon.