Personality Nami - All about this personality nami in anime one piece
Along with Nico Robin, Nami is one of the smartest of the Straw Hats and the third smartest character in the East Blue according to Oda , the first being Benn Beckman of the Red Hair Pirates and the 2nd being Captain Kuro. At the beginning of the series, Nami despised all pirates. She viewed them as nothing but bad people after losing someone close to her, only changing her mind after she met Luffy. Before her view changed on pirates, she was perfectly fine with giving Luffy up captive to Buggy, as she could not bring herself to stoop to their level. She also dismissed the Devil Fruits as myths until she saw Buggy's Bara Bara no Mi in action.
Nami is greedy and will do anything for money, accepting any challenge that comes along. Her love of money stems from her childhood, where she lived a poor life and was often upset at having little wealth despite the love of her adopted mother. While she will send in Luffy and the rest of the crew to meet the demand, the one thing she will not do is sell out a comrade; no matter what the sum. She has several times put her own crewmates in debt over trivial matters (like Luffy for tearing her coat and Zoro for borrowing 100,000 only not to spend it and return it later), her usual charge for repaying the debt being 300% interest, and will often bring up these debts in order to get someone to do something for her. She takes control of the amount of money the crew spends, ever aware of the crews spending habits (such as Luffy's desire to spend all they have on meat) and tries her hardest to avoid it getting spent all at once. To this end, she is in complete horror whenever the rest of the crew wastes money or passes up an opportunity to get it. She is loyal to her money, but no matter how much she denies it, her loyalty to her nakama comes first as seen when she decided to give up her agreed 1,000,000,000 deal with Igaram for protecting Vivi for Vivi's sake after Baroque Works was beaten (although she was upset about it and complained later), as well as willingly giving treasure to Lola and preparing to spend 200,000,000 worth of treasure (which they stole from Thriller Bark) to rescue Keimi from slavery.
Nami is very bossy and is usually ordering everyone around, including Luffy, despite not being the captain herself. Nami's main concern when she is in trouble is herself first and usually has other members do her fighting, resulting in her fighting in fewer fights. She is a coward, though not on the same level as Usopp; her cowardice has more to do with survival. She is aware of dangers they face every day and has a much better understanding of the world and its more dangerous individuals (e.g. the Shichibukai) than most of her crew, though lacks Robin's knowledge on some of its other powerful figures (e.g. the marine admirals) and organizations (e.g. the Yonko).
She can be devilish at times and will not think twice about ditching the others to save her own life.[8] She has been known to stand her ground against anyone hurting her comrades, abandoning her otherwise normal routine of trying to stay out of harm's way. The best example came from her survival of Enel's game which left her as the only fighter standing besides him, she agreed to board his ship and go to his promised land out of fear after seeing all the strong fighters lose the game, but later after hearing his plans that would forsake the sky island, she soon turns on him. After the timeskip Nami seems less violent, such as when Luffy and Zoro nearly broke the coating on the ship it was Usopp and Chopper who scolded them for their reckless behavior and not Nami.
However, in return for her lesser sympathetic personality traits, she is also one of the more compassionate crew members who is fast to show sympathy when hearing sad things about other people, and as she showed during the incident with Hatchan, she is willing to forgive even people who have hurt her for many years. She is easily one of the Straw Hat's most emotional members, she cries easily and she shows much understanding of and insight into feelings. This often makes her good to comfort her friends (though she has also done the opposite to comically effect), as shown during the crew's discussion on about whether Usopp should return or not, she insisted that Usopp should return. Nami also has an obsession with fashion, as she is never seen wearing the same clothes. This was not present in the early chapters and started after the Syrup Village Arc.[13] When Nami goes shopping, she sometimes goes to exquisite boutiques and tries on many things, just to leave stating that she is searching for something more casual. She does not seem to have much modesty as she sometimes wears rather skimpy clothing and allows people to take photos of her wearing very little, such as swimsuits (as long as they pay).
After the two year timeskip, she does not over-react, scold, or hit the crew as often for their rash actions anymore, like when she decides to take part in activities such as demanding money when the crew holds Ryugu Kingdom "hostage". In fact she appears quite calm in the most daunting of situations since the crew reunited, though is still prone to panic in the face of imminent danger (both shown during the descent to Fishman Island). She also has developed a high stamina for drinking during celebrations and can drink as much (or more) than the rest of the crew. In fact, during the two year timeskip she has shown to be able to drink even more than previous.
During the Punk Hazard Arc, Nami is shown to have a soft side for children. When her and the others are fleeing through the Biscuits Room, the giant kids that occupy it ask her to save them. She then stops and adds that she cannot turn her back on crying kids when they are asking to be saved.