Bonnie Saturn is one of the daughters of the world-renowned billionaire, William Saturn. The first question that may come to mind is, "Then why is she in Foundation custody?" The answer is rather simple. To her father, she was expendable. Initially, he was going to sell her younger sister to the Foundation. Bonnie offered to go in her place, and without so much as a second thought, her father agreed.

She gained quite a reputation within Site 9 as a friendly, kind individual, who can and will carry on an intellectual conversation for hours. She's a sworn pacifist, mostly due to the information she's gathered from the dozens of history books she's read. She likes to believe that there are always other options, but god help you if you back her into a corner.

The books she reads to further her intelligence and fill her time are supplied to her by her supervising doctor, Eryn Brite. Eryn likes to boast about how powerful Bonnie is, and while Bonnie would disagree, she likes to see someone she'd consider a friend happy.