She is a pirate and the navigator of the Straw hat pirates. She is the third member of the crew, and the second to join. She briefly betrays the crew during the Baratie Arc and rejoins at the end of the Arlong Arc after her past and true intentions are revealed.
Nami is a young, somewhat tall girl with short, orange hair and a slim build. Many people consider her to be very good looking. She has a blue tattoo (black in the manga) on her left shoulder which represents Mikan and pinwheels (a homage to Bellemere and Genzo, respectively), where she used to have a tattoo for being a member of Arlong's Crew. Near the beginning of the series, Nami wears a variety of clothing in the series but her most longest lasting is her white and blue striped shirt, an orange skirt and high-heeled sandals. She retains this look until the Arlong park arc, afterward she is seen wearing a different outfit for each arc. Nami wore thick, low cut leather boots and a simple blouse. However, during the Arlong park arc and thereafter, Nami wore strappy, heeled sandals and more revealing outfits (With the tattoo no longer being a secret). She seemed to have abandoned the sandals for high-heeled boots as of Chapter 435. She usually pairs her tops with skirts with rings on them. Her overall physique matured suddenly (though this is, most likely, a simple change in style of artwork). Her fashion frequently changes as well as her hair style. Many of her shirts feature four-letter words, such as "MODE," "GOLD" or "EVIL," similar to a shirt that Bellemere once wore that had "MACE" on it.