Chouka U Baragasaki serves as a subordinate to Mary Kikakujou, one of the Supreme Five Swords, and occasionally partners with Nono Mozunono in various activities.

She has long blonde hair, styled into two waist-length ringlets, and blue eyes, though both are artificial; the hair is a high-quality wig and the eye color comes from contact lenses, as she is Japanese and alters her appearance to seem more Western. Her attire consists of a purple frilled dress with a white collar and red ribbon tie, a brown belt holding her whip, a red calf-length skirt, brown laced boots, and a silver butterfly-motif headband.

She strongly dislikes her real name due to the "U" in her surname containing the Japanese character for "cormorant," and prefers to be called by the title "Regina delle Farfalle" or "Queen of the Butterflies."

In combat, she fights with a whip, though she finds it impractical and difficult to control effectively.