The Previous Grandmother is a minor character of The Promised Neverland series. She was a staff member working at Grace Field House, who formerly ran the place before Sarah replaced her as the farms' Grandma.
The Previous Grandmother was presumably born and raised at Grace Field House at an unknown plantation. At age 12 she was shipped out and began training to become a Sister at Grace Field Headquarters. At some point, she likely served as a Mama before being promoted to Grandma. Around 20 years ago, a young Isabella failed to escape Grace Field House, and was shipped out after getting caught by her caretaker. Isabella arrived at the gates, and was shocked when she saw The Previous Grandmother and a demon standing behind her. The Previous Grandmother soon reached her hand out to Isabella, giving her the decision to either become one of the premium farms' caretaker or die and be fed to the demons. Isabella chose the former, then shook her hand to confirm the deal.
The Previous Grandmother heavily resembled the present-day Sarah. She had short, curly and symmetrical grey hair, a few wrinkles between her nose and lips. She wore a black dress with a high collar (possibly the attire for her occupation as a Grandmother) and part of her facial features were not shown.
- Her presence showed how the role of being a Grandmother can be passed down to a caretaker after one stepped down. In this case, her role was passed down to Sarah.