Martha is a sinner demon and a minor antagonist of Helluva Boss who made her debut in "Murder Family". 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, and in "Apology Tour", is seen living together with Mrs. Mayberry. Potential full name: Martha Ursula Barnhill.