Billie is known as the gun-toting granny of the Hatfield clan. She always packs a pistol, no matter where she goes. Billie is full of old-school wisdom and family history. She is not only the glue that keeps the Hatfields together, but also keeps everyone in line, especially Mark. Billie is the mother of Mark, Missy and John T., and she has taught all of them to be proud of their family history and to never take any guff from anyone.