Thea Stilton

Thea Stilton is a fictional character and the pen‑name author of a popular children's mystery series published by Scholastic (originally created within the Geronimo Stilton universe by Italian author Elisabetta Dami). Portrayed as Geronimo Stilton's adventurous younger sister and a special correspondent for The Rodent's Gazette, Thea is depicted as a globetrotting journalist and former Mouseford Academy professor who appears as the author of the Thea Sisters books and related spin‑offs aimed at young readers.