Here is a list of some of the more significant characters:
Annie (Anastasia) Marie Marshall--Jimmy's best friend; also 9 years old; she can be manipulative and abrasive; survivor of significant physical abuse and neglect.
William McDonnell--Main antagonist; director of Etyouth and overly egotistical
Major Camp--Head of security for Etyouth; McDonnell's right-hand man
Betsy Shafer--Annie's grandmother and legal guardian
Colin Richard Stevens--Annie's 5-year-old half-brother; lacks a great deal of self-control; has a speech impediment that gets worse when he gets excited; survivor of physical abuse and neglect
Kathleen Stevens--Annie's and Colin's mother; recovering addict; lost all of her parental rights
Robert James Miller--Jimmy's father who is killed by Etyouth
Mikayla Jones--Annie's antagonistic classmate; bully
Marcus Julian Welborne--Jimmy's friend; Poster child for childhood obesity
Joey--Marcus' best friend
Susan Jane Miller--Jimmy's mother; died of ovarian cancer