Carol Mayberry is a sinner demon. She hired Blitzo and his crew to kill Martha, a woman whom she caught having an affair with her husband.

Martha is a sinner demon. As a human, Martha was the wife of Ralphie and the mother of two unnamed children. She drove Mrs. Mayberry past her breaking point after she was caught sleeping with the latter's husband. After her death, she became a Sinner in Hell.

Mayberry and Martha are now in a relationship and are living together.