Mary Cooper, née Tucker, is a devout Christian and the mother of Sheldon, George Jr., and Missy Cooper. She was married to George Cooper Sr. for 20 years before his death in 1994. Mary is also a grandmother to Leonard and Constance Cooper, and the mother-in-law of Amy Farrah Fowler. In The Big Bang Theory, Laurie Metcalf portrays Mary Cooper. In the spin-off Young Sheldon, Zoe Perry plays a younger version of the character, a role she earned through an audition