As head of the Spina di Rosula, Navia is Fontaine's caring "big sister," known for her sharp mind and investigative prowess. Despite personal struggles, including the loss of loved ones like her parents and allies Melus and Silver, she remains committed to a brighter future. Her relationship with Clorinde, once strained after a duel resulting in her father's death, shows signs of reconciliation after collaborating with the Traveler and Paimon on a case. Navia finds solace in baking macarons.