The Pendant of Willpower is an artifact that features prominently in the story Lament of Carmelita. The main ability of this artifact is to increase the ability of a person to resist manipulation or hypnotic suggestion so long as it is in a person's posession. In the story, the pendant is the primary means of resisting the powers of mental control used by The Sire. It is utilized first by Sly Cooper, who uses his pickpocketing skills to discreetly steal the artifact from The Sire during a chance encounter. The origins and final disposition of the pendant are unknown, though it can be assumed that it was consigned to the Cooper Vault or kept in the Cooper Mansion in the Swiss Alps.