Nami

Nami, also known as "Nami the Navigator" or "Cat Burglar" Nami, is the protagonist from the One Piece game series. She is the navigator of the Straw Hat Pirates who plans their ship's course throughout the series. Adopted and raised by Marine seaman turned tangerine farmer Belle-Mère, she and her older sister Nojiko witness their mother being murdered by the infamous Arlong, whose pirate gang occupies their island and extracts tribute from the population. Striking a deal with him, Nami, still a child, but already an accomplished cartographer who dreams of drawing a complete map of the world, joins the pirates, hoping to buy freedom for her village eventually.

Growing up as a pirate-hating pirate, drawing maps for Arlong, and stealing treasure from other pirates, Nami becomes an excellent burglar, pickpocket, and navigator with an exceptional ability to forecast weather. After Arlong betrays her, and he and his gang are defeated by Luffy and company, Nami joins them in pursuit of her dream and slowly acquires great infamy herself.

She is able to use her three-sectioned staff and use her climate skills to create powerful attacks; the most prominent of these staff weapons is the Clima-Tact, in which she manipulates the climate to create weather-based attacks.

History
Originally an orphaned child, Nami and her adoptive sister Nojiko were raised by Belle-Mère. Belle-Mère acted as the girls' foster mother and grew a tangerine orchard to support them; she constantly struggled to make ends meet for them. After a young Nami had a bratty spat with Belle-Mère over their poor upbringing, Arlong arrived on the island. He extorted the residents to pay a costly fee for their survival.

Encouraging her daughters to live with pride, Belle-Mère used all of her funds to spare her children rather than pay for her own safety. She is consequently killed by Arlong shortly after. Regretting her torn conciliation with Belle-Mère in her final moments, Nami formed a pact with Arlong to buy her home's freedom from him. Her life as an indentured thief began, but Nami hoped her perseverance would one day free her to chase her real childhood dream: to become a master navigator and compile a detailed world map.

She first meets Monkey D. Luffy during his first confrontation against Buggy. To keep the map she stole from Buggy, Nami tries to double-cross both men but is ultimately swayed by Luffy's personality. Accompanying his travels for a time, she piffles Going Merry during the fight for Baratie. Once Luffy and company track her down and learn about her past with Arlong, Luffy accepts her as his comrade. When he liberates her home from Arlong's control, Nami gladly becomes a permanent member of their crew. She is able to live her dream in earnest the moment she joins the Straw Hats. To forever discard her ties to Arlong, Nami altered his tattoo on her arm to honor her close role models from childhood.