Banchina is a minor but significant character from the One Piece series, appearing primarily in the past as part of the backstory of Usopp, the sniper of the Straw Hat Pirates. She was the wife of Yasopp, a member of the Red Hair Pirates, and the mother of Usopp.

In terms of background, Banchina lived with her young son in Syrup Village in the East Blue. She is described as a woman who deeply loved her husband and wanted him to pursue his dreams. According to her son's memories, she encouraged Yasopp to go to sea with the Red Hair Pirates, choosing to raise Usopp alone rather than hold her husband back from a life of adventure. This decision, born of selflessness and love, would define her family's future.

Physically, Banchina had a long nose, a feature she passed down to her son. Her appearance was that of a kind and gentle woman, though during the period shown in the story, she was already bedridden due to a serious illness. In the original manga, her straight hair is black, while the anime adaptation gives it a dark green color.

Banchina's personality is shown to be caring and optimistic, even in the face of her own mortality. While suffering from her unnamed disease and knowing her husband would likely never return, she maintained a gentle demeanor toward Usopp. Her most defining moment comes as she nears death. Every day, the young Usopp would shout to the sea that pirates were coming and that his father had returned to take them away, a lie meant to give his mother hope and encourage her to fight her illness. Banchina, however, was aware of the truth. Rather than despair, she used her final moments to thank her son and to express that she was glad Yasopp had gone out to sea to live freely. Her final words were not of regret, but of acceptance and love, which left a profound impact on Usopp. She passed away when Usopp was only seven years old.

Within the narrative, Banchina serves primarily as a motivating force for Usopp. Her death, combined with the absence of his father, is the root of his deep-seated loneliness and his habit of lying to get attention. The lie he told his mother as a child to cheer her up became a compulsive behavior after she was gone, as he continued to run through the village shouting that pirates were coming, secretly hoping that one day it might actually be true and his father would return. Her memory is a source of silent strength for him. The desire to become a brave warrior of the sea, a man who is not a liar, is Usopp's dream, and it is intrinsically linked to honoring the mother who faced death with courage and the father who lived with freedom.

Regarding relationships, her connection with her husband Yasopp is one of supportive distance. Although the anime filler arcs show Yasopp expressing guilt and feeling useless for leaving his family, the core of Banchina's story is that she approved of his departure. Her relationship with Usopp is the most developed; she is the warm presence of his early childhood whose loss created an emotional void he tries to fill with tall tales.

As a character who dies before the main storyline begins, Banchina does not undergo development in the present. Her role is a static but foundational piece of history for one of the main protagonists. She has no combat abilities or special skills shown in the series, as her entire significance is emotional and thematic, representing the themes of maternal sacrifice, the pain of abandonment, and the importance of pursuing one's dreams despite the cost.