Treasel

Treasel is a Spring Fairy from the Nevernever, and an ally of the Seers. He was stationed to monitor Cookie's home in case anything came through the Nevernever. He met Cookie when she entered the Nevernever for the first time.

He speaks primarily in loose rhyme, and is an excitable, but helpful little creature.

Appearance
Treasel shines so brightly with green light that his exact appearance is difficult to ascertain. He is a small humanoid, looking like an elf due to his pointy ears. He commonly wears a tunic and a little hat of a sort.

History
As a fairy, Treasel has likely existed for a tremendous amount of time. He at some point became an ally of the Seers, and seems to be proud of this fact. Due to that, he is often very helpful to Cookie Souris.

Boo Hag
Treasel was first encountered in "Cookie's Monsters - Boo Hag" when Cookie Souris travelled to the Nevernever from the woods behind her house. Upon meeting her, Treasel sought to inform the Seers of her presence, but Cookie stopped him to ask for his aid in locating the Boo Hags, who had fled from a previous encounter.

Treasel found the Boo Hags hiding in a playground on the outskirts of Beach City. He brought Cookie, Alexandra Salome, and Perseus Iroas there to face the Boo Hags in a final combat, where Cookie ended up sending the Hags back to the Nevernever.

After that encounter, Treasel returned to the Nevernever to report back to the Seers about what had happened, according to Perseus.