Justine Courtney is a judge and member of the Prosecutorial Investigation Committee (P.I.C) . She is highly intelligent and formidable, tasked with observing the movements of prosecutors in order to determine who is unfit for the task. She has an almost religious devotion to the law, often referring to the "Goddess of Law" and using many religious phrases. Courney has an adopted son named John Marsh and has good amity with prosecutor Miles Edgeworth and her partner Sebastian Debeste.  