Doreen Doidge was a character in The Dark Wizard.
Doreen is a charity worker and also runs the Blade Quest fan club. She began thinking she was a real character from the book series and tried to get the crystal that would complete the plans of William Todd Williams. She fought with Dan and Aneisha and was defeated by Zoe, who shot her with a fake arrow from behind. She was then taken away by MI9, but it is unknown where and whether or not she was being arrested.