Nono is portrayed by Nozomi Tsuji, reflecting her real-life persona as a Mini-Moni member. She is cute and occasionally meek, yet can display prideful or mean tendencies. Despite this, she shows kindness toward her fellow Mini Hams. Her favorite foods are apples, pineapples, melons, watermelons, strawberries, and sunflower seeds. She enjoys visiting amusement parks. Nono possesses visible fangs, mirroring Tsuji's real-life yaeba dental procedure at the time.

Within the cake shop setting, Nono engages in playful troublemaking with Aibon (Ai Kago's character), often requiring intervention from leader Mika-chan to restore order. She interacts with regular customers like flower shop owner Yaguchi-san (former Mini-Moni leader Mari Yaguchi) and flight attendant Gocchin (Maki Gotou).

As the hamster Nonno, representing Mini-Moni in the Hamtaro franchise, she appears in the first three Hamtaro movies. In a related e-Reader game story, Nonno uniquely befriended the villainous Moles instead of being directly kidnapped. After rescue, she repeatedly asked for the return of her headpiece.