Bonnie is a six-year-old girl who is introduced in the book Fear. She and her best friend, Blake, the help to build, clean, and monitor the toilets at Lake Tramonto. She doesn't mind this work and enjoys playing in the sandpit nearby the toilets with Blake. Her life is fairly carefree for a child in the FAYZ.
Bonnie is the second child to be taken over by Little Pete. Little Pete is in a strange spirit-form and sees people inside the FAYZ as avatars of themselves. He reaches out to touch Bonnie's "avatar," and mixes her DNA with that of a coyote, creating something that is "no longer Bonnie." She dies quickly as a result of this horrific transformation.