"Cat Burglar" Nami is a pirate and the navigator of the Straw Hat Pirates. She was the third member of the crew and the second to join, doing so during the Orange Town Arc. Later, she left and betrayed the crew during the Baratie Arc, but rejoined at the end of the Arlong Park Arc, after her past and true intentions were revealed. She has a bounty of Beli66,000,000.  Being the assigned navigator of the Straw Hat Pirates, Nami is responsible for evaluating the direction that the ship goes as they sail further into the sea. Nami also tends to act as the crew's de facto treasurer.

Prior to the Alabasta Arc, Nami, like Usopp, was not as proficient in combat as the fighters or ability holders of her crew. Ultimately, she remained a supporting member of the crew rather than a main fighter, as she did not have superhuman strength, nor formal training in any fighting style, although she was later shown, in the Water 7 Arc, to have impressive agility and surprising leg strength, being able to jump the wide distances between rooftops in Water 7 . While on Weatheria, Nami showed she was capable of running with a bag much larger than herself in one hand, while carrying Haredas in the other. While Nami has nowhere near the strength of the Monster Trio she still capable holding her own against weaker foes and minions. When she was grabbed by a Marine officer Nami brought him down with one savage punch and defeated another Marine with barrage of kicks. When she was fighting Kalifa Nami withstood a Shigan from the assassin a technique that brought down Paulie a strong foreman, Nami also survived breathing in the toxins from the Daft Green plant, which is so poisonous it can kill quickly if inhaled repeatedly. Nami survived long minutes before getting the cure, This all shows that Nami like the rest Strawhats has a high level of endurance. Nami was also shown to possess moderate skill with a bo staff which she would often use for self-defense before acquiring the Clima-Tact. However, because she was usually outmatched by the monstrous foes that they met at sea, she typically relied on her crew-mates to fight in her place. Nami also appears to have some skill with ropes, being able to tie up and capture Luffy from behind. After the two year timeskip Nami is shown to have increased greatly in both her usage of the Clima-tact, as well as her own physical abilities. An example of this is seen when she detected being ambushed from behind by a fishman, and further managed to deflect a blow from his blade, despite the strength of normal fishmen reputed to be 10 times that of a regular human.


In Film Z Nami was able to keep up with the pace of Neo Marine Vice Admiral Ain's dagger attacks using her Sorcery Clima-tact, and even attempt to counter by splitting the Clima-tact and firing off a blast of wind. Most notably Nami's ability increase was shown in Chapter 811 when she reacted to a weakened Wanda's attack before Sanji and Brook were able to save Nami from having to defend herself. After stopping her in her tracks and overpowering her, Nami then managed to pin her to the ground. Nami was also shown to possess superhuman legs while on Punk Hazard, as Sanji managed to defeat a group of Caesar Clown's subordinates with ease while inside Nami's body, utilizing the same kick-based fighting style he usually employs. Still stuck in her body, Sanji also demonstrated the ability to use "Blue Walk" , an ability developed from mimicking the superhuman Geppo of CP-9, without damaging the muscles in her legs and even under heavy conditions like the freezing depths of a chilling water deep enough to sustain sharks. Nami has also shown that she has fairly decent agility as she was able to dodge Wanda's attack by somersaulting. She still has limitations however, as when Sanji was trying to outrun Smiley's gas he noted her body could not keep up with the pace of Zoro, Brook, and Kin'emon for long, until he groped her breasts and got a speed boost from over-excitement.Nami is a highly skilled navigator and a talented cartographer. Arlong considered her skills on par with the fishmen "superiority" since they were superior to any fishman's. When Luffy destroyed her room at Arlong Park both bathymetric and geographic maps were seen, indicating that Nami has a wide variety of cartographic skills. She is capable of formulating advanced equations in mere minutes to predict a precise course of action, although she usually needs to write the equations down on a physical medium when formulating them. She has a supernatural ability to sense changes in the weather, "with her body" according to Vivi, and can even predict the emergence of supposedly unpredictable cyclones in the Grand Line, undeterred even by a high fever. This attribute proved useful during Nami's one-on-one altercation with Enel, where she managed to deflect several of the Goro Goro no Mi user's lightning-based attacks using only "Thunder Balls" from her first Clima-Tact. It could be assumed that after the timeskip her navigation skills have greatly improved due to her study of the New World climate with the help of Haredas, as even Caribou immediately recognized and praised her skills as a navigator during their descent to Fishman Island.

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