Ribon-chan is a female hamster with white fur who consistently wears signature blue ribbons to secure her pigtails. Owned by Maria, she relocated from France to Japan, developing such a strong attachment to her new home that she refuses to return. This background results in a French accent in English adaptations, while in Japanese media, she appends "dechuwa" to her sentences. Her French-derived name "Bijou" means "jewel" or "small, exquisitely wrought trinket," aligning with her refined demeanor. Personality-wise, she exhibits elegance and occasional unworldliness but demonstrates generosity by helping friends even at the expense of her tidiness. She prioritizes her ribbons yet balances this with pragmatic helpfulness. Her close friendships include female hamsters Pashmina, Penelope, and Sandy. Early media like "Hamuchanzu de Gozaimachu! Vol.1" depicted her as Penelope's older sister with a knitting interest, though later anime omitted this trait and reassigned knitting to Barrette. Romantic dynamics significantly shape her character. She harbors a persistent, unrequited crush on Hamtaro, evident from their first interaction where she winked after a dance. This intensifies in episodes like "Bijou's Favorite Ribbon" and "A Valentine Battle!," where she competes with Sparkle and Oshare for his attention. Despite occasional closeness, such as brief walks in "Satisfied Bijou," Hamtaro views their relationship platonically. Conversely, Boss openly pursues her, but she interprets his attentions as brotherly kindness; his crush later shifts toward Harmony or Oshare. Her interactions with Lapis present notable conflict. Initially welcoming, Ribon-chan becomes distressed and views Lapis as a rival after witnessing her kiss Hamtaro in "A Mysterious Seed Experiment!," leading to active attempts to separate them. The tension resolves in "Bijou's Love Rival!" when Lapis expresses gratitude, kisses Ribon-chan, and clarifies the earlier kiss as non-romantic, restoring their friendship. Outside the anime, media like "Hamtaro: Ham-Ham Heartbreak" ambiguously reference her as Hamtaro's girlfriend, while a LINE sticker implies romantic advancement by depicting them kissing. Regional adaptations alter her name: "Lacitos" in Spanish, "Lili" in Chinese, "Cookie" in Hebrew, with French and German retaining "Bijou."