Miss Treecreeper is an ymbryne and is a friend of Alma Peregrine.
Biography[]
Miss Peregrine's Home for Peculiar Children[]
Miss Peregrine mentions Miss Treecreeper to Jacob while telling him about loops and ymbrynes. Miss Avocet reveals near the end of the book that a fortnight before wights invaded Miss Avocet and Miss Bunting's loop, they invaded Miss Treecreeper's loop and abducted her.
Library of Souls[]
Miss Treecreeper, along with the eleven other ymbrynes captured by Caul, was rescued by Jacob Portman and his friends. After the ymbrynes are freed, she and a few others fuss over their elder, Miss Avocet.
Alongside the other eleven, she later helps to collapse the Abaton loop.
Peculiarity[]
Miss Treecreeper has the ability to transform into a bird, specifically a treecreeper. Like all other ymbrynes, she has the ability to manipulate time and create/manage loops.