Momona is the main character of Lady Jewelpet. She is a Petit Lady residing in the Jewel Palace. She is Ruby's human partner.
Momona is a shy girl who often feels alone for being a normal girl. But she can be somewhat stubborn just by going things her own way. She is often scatterbrained whenever she doesn't know what to do. She can also be very unaware of her surroundings unless she gets used to them. It was also revealed that she loves sweet foods.
Momona has little knowledge about upper class nobility. She often looks up to them rather than becoming one because she is just a normal girl. Even though she believes she doesn't have what it takes to be a noble lady, she always tries her best to succeed.
Momona only became a lady because Ruby convinced her to, but Momona looks up to Lady Diana. Because Momona inherited her letterpen, and heard messages from the previous owner, Diana, she looks up to Lady Diana.
Momona is now best friends with Charon, Mizuki, and Lillian. She also seems to have a crush on Cayenne, while Romeo, Miura, and Cayenne have crushes on her. She has married Cayenne.
Momona is a human of origin. She has long pink hair with large twin buns and small tufts sticking out on her sides and supported with a large light pink polka-dotted bow. Casually, Momona is seen wearing a uniform-like pink and white shirt with a red tie. Along with that, she wears a black skirt with a pink sweater tied around her waist. She also wears white socks and brown loafers, and has a light pink beaded bracelet with a bow matching the one on her head. In her Lady form, she wears a pink and white formal dress. She also keeps the same hairstyle.
- Momona's twin buns and polka-dotted bow are reminiscent of Minnie Mouse, the Walt Disney character who's Mickey's girlfriend. In concept art, the colors of the bow were closer to Minnie's.
- This is not only Keiko Kobayashi's first role in a Jewelpet anime, it's also her first anime role ever. It's unknown if she will keep working in the business.
- This is the second time a voice actress gets her first role as the main protagonist, the first being Natsumi Takamori as Akari Sakura in Jewelpet Twinkle.