Having killed his abusive foster parents to save his adoptive siblings, Wriothesley was sentenced and exiled to the Fortress of Meropide in his teenage years. He eventually became its Administrator and has enforced a series of reforms under his rule, serving as a role model for the prisoners. Wriothesley is the "Duke" of the Fortress of Meropide, serving as the prison's administrator and overseeing the facility's overall status. Despite his appearance, Wriothesley is fairly calm and collected. 