Sango is a female tabby cat Jewelpet from Jewel Land. She possesses yellow fur marked by distinct brown stripes on her head, back, limbs, and tail, along with brown inner ears. Her eyes are scarlet corals, known as Jewel Eyes. She typically wears a red ribbon with a white flower on her left ear and a grey pearl necklace featuring a strawberry-shaped coral pendant. Through Magical Change, her human form appears as a young girl with short brownish hair, a yellow summer hat decorated with a red flower ribbon, and a lemon-yellow dress featuring red sleeves and a back bow.

Her personality radiates energy and cheerfulness, often leaning towards an easygoing nature. A defining passion consumes her: an intense love for sweets and desserts, a recurring theme in her stories. She frequently ends her speech with "nyan," a habit consistent across most series except her debut. This confectionery obsession extends to expertise in baking and judging sweets, demonstrated when she served as a primary judge in Jewel Land culinary competitions.

Sango's magic centers on protection, officially designated as her Jewel Power, safeguarding human and family well-being. Earlier appearances alternatively described her power as Luck, focused on turning misfortune positive. Her magic often requires amplification through partnership or specific items like the Jewel Pod, Jewel Pad, or Jewel Watch, depending on the series.

Her journey unfolds across multiple seasons:
- **Jewelpet (First Series)**: She debuted in episode 31, awakening from a Jewel Charm to assist human partner Lyrica Himeno during a cultural festival. Her initial magic purified dark magic affecting Lyrica, establishing her protective role.
- **Jewelpet Twinkle☆**: Partnering with human magician Miria Marigold Mackenzie alongside Garnet, their magic frequently combined for spells like "Rararura" for transformations or "Jewel Flash" for crisis intervention, such as extinguishing fires. She supported Miria through challenges, including a time-travel attempt to alter her mother's past.
- **Jewelpet Sunshine**: As a Rose Class student, she roomed with Komachi, sharing their mutual love for sweets. A brief class transfer occurred due to administrative changes. Later falling under the Dark Queen's influence resulted in a robotic double. The series concluded with her and Komachi opening the Raspberry Caffe sweets shop in Paris.
- **Jewelpet Happiness**: She served as a school nurse, aiding characters like Marie Hanazono and Garnet, and formed the "Sweets Angel" trio with Sakuran and Rosa to create Magic Gems.
- **Jewelpet Magical Change**: Retaining her confectionery obsession, she achieved human form, prominently featuring in café management episodes where her initial reluctance to share food evolved into generosity.
- **The Movie: Sweets Dance Princess**: She attended Princess Mana's birthday in Sweetsland, declaring "Sweets Lover Sango, nyan!" as her catchphrase, her competitive spirit emerging when challenged by another character's greater sweet-eating capacity.

Additional appearances include cameos or minor roles in **Jewelpet Kira☆Deco!** (as narrator and background character), **Lady Jewelpet** (non-speaking), and **Jewelpet the Movie: Sweets Dance Princess** (reaffirming her culinary identity). Her character design includes a Charm Form – an egg-shaped pink jewel adorned with strawberry-like corals – with corals and strawberries consistently serving as her motifs across all media.