メアリ

A girl who used to live in the same cell as Jack and Alice - however, because of her weak powers, she has been always alone and never gotten recognized by others. Despite this she is not bothered by it, and each time she lights up a match and sees a delusion, she just ends up laughing, grinning and enjoying the loneliness. The only person she truly cares for is Charlotte, who also gave Mary her name.