The Chief Justice of Fontaine, known as the Iudex, is renowned for his unassailable impartiality. In accordance to his role as the Chief Justice, Neuvillette takes the court and trials very seriously, handing out verdicts without impartiality. He is notably perceptive, being able to hear Paimon's whispers and is able to deduce the additional details from the evidence provided to him during a trial. He utilizes the Oratrice Mecanique d'Analyse Cardinale to make the final decision.