Charlize Theron

as Aileen Wuornos

Christina Ricci

as Selby Wall

Bruce Dern

as Thomas

Lee Tergesen

as Vincent Corey

Annie Corley

as Donna

Pruitt Taylor Vince

as Gene / Stuttering "John"

Marco St. John

as Evan / Undercover "John"

Marc Macaulay

as Will / Daddy "John"