Geronimo Stilton

Geronimo Stilton is an Italian children's book series created by Elisabetta Dami and written under the pen name of the title character. Scholastic Corporation began publishing the English version of the series in the US in February 2004. In the UK, the English books are published by Sweet Cherry Publishing. The series focuses on the title character, a mouse who lives in New Mouse City on Mouse Island. A best-selling author in-universe, Geronimo Stilton, works as editor and publisher for the newspaper, The Rodent's Gazette. He has a younger sister named Thea Stilton, a cousin named Trap Stilton, and a nephew, nine-year-old Benjamin Stilton. Geronimo is a nervous, mild-mannered mouse who prefers a quiet life, yet keeps getting into faraway adventures with Thea, Trap, and Benjamin in both fictional and real locations. The books are written as fictional memoirs of him on these adventures. The books are designed and distributed in full color, depicting important words in the text as colored and in illustrative typefaces. In December 2025, it was announced that the book series was acquired by Italian animation studio Rainbow.