Countess Yvonne is a vampiress who appears as an antagonist in the Give Yourself Goosebumps: Please Don't Feed the Vampire! book.
Give Yourself Goosebumps: Please Don't Feed the Vampire!Edit
Countess Yvonne appears in the book in some bad endings.
- The reader throw a glass of blood in Countess Yvonne's face and she is swarmed by the other vampires trying to lick the blood off her. Instead of escaping, the reader join the other vampires and try to drink some of the blood. The reader get scolded for making that decision and are advised to close the book and repeat "It is not normal to drink blood." The book tells you how weird the Reader is and speculates that the Reader may be a real vampire.
- Countess Yvonne and the other vampires have drained Gabe of his blood and she locks the Reader inside one of the coffins for years to come....until she decides to free the Reader.
In the Goosebumps movie she is portrayed by Maryann Gorka, as a minor antagonist. She appears as part of Slappy's army of monsters when released alongside the other monsters. What became of her afterwords is unknown she was most likely sucked back into a book that R.L. Stine and Zach wrote in the final battle or escapes that fate along the invisible boy and Curly the Skeleton and many other monsters that evaded capture.