Creepella von Cacklefur is a female jounalist who lives in Mysterious Valley. She solves spooky cases with her pet bat, Bitewing. Creepella has a crush on Geronimo Stilton. She has her own Creepella von Cacklefur books:
- The Thirteen Ghosts (released August 2011)
- Meet Me in Horrorwood (released August 2011)
- Ghost Pirate Treasure (release date February 2012)
- Return of the Vampire (release date May 2012)