Jemima is a orphan who formerly resided in the Grace Field House. Jemima is considered as one of the house's "low-quality goods" and hence has average intelligence for her age. She was brought into the escape plan by Emma two months after the truth of the orphanage was revealed. After her success of escaping Grace Field alongside 14 other orphans, Jemima now seeks to find William Minerva, whom she and her team believe can grant them the liberty to live a safe and peaceful life away from the demons. Jemima is a cheerful little girl who is described as being a "straight shooter".[1] Despite being more polite, well-behaved, and reserved compared to the other younger children, Jemima can display acts of mischievousness with her fellow foster siblings. She is also very helpful and responsible, as, despite her young age, she helps around with chores in the House and after they escape as well. She is very caring and considerate towards others, especially her family. She worries about the people important to her a lot.

The Promised Neverland
At Grace Field House, life couldn't be better for the orphans! Though they have no parents, together with the other kids and a kind "Mama" who cares for them, they form one big, happy family. No child is ever overlooked, especially since they are all adopted by the age of 12. Their daily lives involve rigorous tests, but afterwards, they are allowed to play outside. There is only one rule they must obey: do not leave the orphanage. But one day, two top-scoring orphans, Emma and Norman, venture past the gate and unearth the harrowing secret behind their entire existence. Utilizing their quick-wittedness, the children must work together to somehow change their predetermined fate.

The Promised Neverland (Manga)
At Grace Field House, life couldn't be better for the orphans! Though they have no parents, together with the other kids and a kind "Mama" who cares for them, they form one big, happy family. No child is ever overlooked, especially since they are all adopted by the age of 12. Their daily lives involve rigorous tests, but afterwards, they are allowed to play outside. There is only one rule they must obey: do not leave the orphanage. But one day, two top-scoring orphans, Emma and Norman, venture past the gate and unearth the harrowing secret behind their entire existence. Utilizing their quick-wittedness, the children must work together to somehow change their predetermined fate.

The Promised Neverland 2nd Season
Emma, Ray, and the rest of the older children have escaped the confines of the Grace Field House. However, with relentless demons set on capturing them, their arduous battle for freedom has only just begun. Despite venturing into the treacherous wilderness, the children remain optimistic due to their possession of books written by William Minerva. Coded within his books are messages detailing the world outside the farm—information that can help them survive with the limited resources they have. But when their pursuers draw near, the children soon encounter their most dreadful situation yet. In Yakusoku no Neverland 2nd Season, the children struggle to survive in the strange ruthless world, striving to find a sanctuary they can truly call home.