Wendy Takahashi is an original character from the Land of Stories series. She first appears in chapter 3 of A Grimm Warning. She is a teenager in Conner's grade, and one of the four members of the school's book club, The Book Huggers.Wendy is also sort of a mute as she doesn't talk as it said in Land of Stories: An Author's Odyssey
Appearance and Personality
"Wendy was painfully shy and usually let the other girls do the talking. She was Japanese and had very dark hair and the largest eyes Conner had ever seen on a human." 
Wendy is one of the six students who attends the Germany Trip with Mrs. Peters. She is a loud, eccentric book loving teenager, and one of the four members of the book club. Mindy, Cindy, and Lindy are her best friends.
In A Grimm Warning, Wendy rolls her eyes at almost everything Conner says or does. She and her three friends assault Conner outside the bathroom, and demand to know hat happened to his sister Alex. She attends the reading of the Brothers Grimm lost stories.
In Beyond The Kingdoms, Mindy, Cindy, Lindy and Wendy have been made hall monitors, and have dropped the book club to create The Conspiracy Club. Wendy and her friends catch Bree Campbell talking on her phone in the closet and blackmail her by saying that they won't tell anyone about her cell phone if she offers information about the Bailey Twins. Bree tricks them, and Mindy assures Wendy and the others that they will find out what happened to the Bailey twins, mostly to calm them down.
In An Author's Odyssey, Mindy, Cindy, Lindy and Wendy are miserable.They are obsessed with the Bailey Twins. It's all they can think about. No one believes their conspiracy theories, and they are mocked and have a terrible reputation. In an attempt to break their obsession, they re-form the Book Huggers, but Wendy and the others cannot concentrate enough to read the books.They meet in the Storybook Grill, and then see Alex and Conner. Lindy and her friends go to Sycamore Drive to spy on the Bailey twins, and they bring recording devices and cameras. When they see Auburn Sally and her crew appear out of nowhere, the Book Huggers drop their recording devices and later faint. Wendy and the others are taken to St. Andrew's children's hospital. Wendy's parents are briefly mentioned in An Author's Odyssey.