This category is for monsters appearing in the Scooby-Doo Mysteries book series.
“The Headless Horseman was the disguise of Katie Kibble, who wanted to protect her horses. Her...Headless Horseman (Scooby-Doo Mysteries)
Pages in category "Scooby-Doo Mysteries monsters"
The following 31 pages are in this category, out of 31 total.