Isabella

Madam Isabella also known as Mama by the children, is one of the main antagonists of The Promised Neverland and the Mama who runs the Grace Field House orphanage, known as Plant 3

Appearance
She is woman with black hair tied into a bun that hangs down in the back. She wears a black dress with a white shirt underneath it and a white apron on top of that.

Personality
She has shown that she has a heart and cares of the children when around them. However when she is not around them her true personality is revealed. She is really a servant to the demons who feed off the children.

Past History
Her past is unknown, except that she was one of the youngest ever chosen to become a "Mama".

Intelligence
She has shown that she is very intelligent and can find the littlest of details. She quickly and easily found out about the children's plan to escape and has been able to keep all her children healthy and top of the line.

Grandmother
A mysterious woman that she reports to. Nothing else is known about their relationship, but it seems that she is a higher authority.

Krone
She has shown he authority over Krone and doesn't necessarily like her. She has told her that she only requested her to help her out and Krone reports only to her.

Trivia

 * She is the youngest ever to become a Mama.
 * She was also an orphan at an orphanage.