Mrs. Briefs, also referred to as Panchy or Bikini in supplementary materials, is the wife of the genius scientist Dr. Brief and the mother of Bulma and her older sister Tights. She resides with her husband at Capsule Corporation in West City, surrounded by their many pets. She is consistently depicted as a cheerful and easygoing woman who almost never stops smiling, embodying a carefree and somewhat airheaded disposition. Her personality is marked by a friendly, go‑at‑your‑own‑pace attitude, and she frequently offers tea, lemonade, or cookies to visitors, often while making lighthearted or flirtatious comments toward characters such as Goku and Vegeta. Despite her generally pleasant demeanor, she can occasionally show hints of mild annoyance, as seen when Dr. Brief prematurely announces the completion of the Namek spaceship.

Mrs. Briefs serves a largely supportive role in the story, primarily acting as a warm, maternal presence within the Capsule Corporation household. She is deeply caring toward her family and even toward Vegeta, whom she warmly welcomed after the Namek saga when he came to live with Bulma, commenting on his hard work as a future husband. She also looked after Trunks during the Cell Saga when Bulma went to see the time chamber. Her motivations are simple: she enjoys hosting, doting on her family, and maintaining a comfortable home. She shows no interest in combat or adventure, preferring to remain at home.

In terms of key relationships, she is a devoted wife to Dr. Brief and a loving mother to Bulma and Tights, as well as a proud grandmother to Trunks and Bulla. She is also acquainted with the main Z‑fighters, often interacting with Goku, whom she has known since his childhood. Notably, she does not age noticeably over the course of the series, maintaining the same youthful appearance and even similar clothing from her first appearance in the original Dragon Ball through Dragon Ball Super. This unchanging appearance has sparked fan theories, but no in‑universe explanation is given.

Mrs. Briefs possesses no special combat or superhuman abilities; her notable traits are her perpetual cheerfulness, her habit of keeping her eyes nearly closed, and her refined taste in clothing and jewelry. Her character does not undergo significant development, remaining a consistent, unchanging background figure who adds warmth and humor to the Briefs family.