Mortola[]
Mortola is the mother of Capricorn, and is dubbed "The Magpie" by Fenoglio. She's crafty and loves poison, and is furious when, at the end of Inkheart, the prisoners (Meggie, Mo, Dustfinger, Fenoglio, and the rest), suceed in killing her son Capricorn.
Looking for revenge, she seeks out Orpheus and "the Wardrobe Man", then comes to Elinor's house and forces Orpheus to read her, Mo, and Basta into Inkheart. Resa comes along as well, and treats Mo when he's hurt by Mortola's gun. Mortola ends up in servitude of the Adderhead, and recieves most of the blame when the Bluejay escapes from the Adderhead's clutches.
Instead of helping cure the Adderhead with her fakely promised brews when told that the Adderhead was in pain because of the Book, Mortola makes shapeshift-seeds that turn her into a magpie, and she flies to Orpheus with a vengeful plan to have her revenge on both the Adderhead and Mortimer.