Fiolina Peppino, second daughter of puppeteer Peppino, belongs to the family-based Peppino Troupe variety performance group. She specializes in puppetry, handling puppet manipulation during shows and caring for her baby sister, Giulietta. The troupe travels from Genoa, Italy, to Argentina. In Buenos Aires, they encounter Marco during his search for his mother. Fiolina forms a deep friendship with Marco, becoming a supportive figure in his journey; she and her family accompany him to Bahía Blanca to assist in locating his mother, demonstrating her compassionate nature and willingness to help others.

Her background is rooted in her family's itinerant performance lifestyle. Her father leads the troupe, and her older sister, Concetta, focuses on dance and song during performances. Fiolina's role emphasizes her puppetry skill and her responsibility for her younger sister during their travels.