Sanji

One of Sanji's most easily noticeable characteristics is the kind, calm, cool, and collected manner in which she carries himself. He tends to speak in a very composed manner, even in dire situations, and rarely acts without thinking. Her demeanor in a lot of ways can be compared to that of a secret agent. This is amplified by the fact that she tends to wear a suit, very often enjoys a smoke, and in the anime, they tend to play smooth music with jazzy undertones when she speaks. She quite often makes comedic exceptions to this, such as when in the presence of beautiful women, or when angered by a crew member.

Like Zoro, she is more perceptive than she seems, and often tells people what they need to hear instead of what they want. Hence, she is seen as one of the more hardened members of the crew. For example, when the Straw Hats first meet Laboon and learn that the whale had been waiting for 50 years for a reunion with his crew, it is Sanji who immediately (and correctly) points out that Laboon's crew is most likely dead. Sanji does possess an optimistic and idealistic side. His dream is to find a sea that even other cooks consider mythical. Furthermore, even after the abuse, she experienced from her family as a child, she held out hope that they may have changed for the better. However, this hope proves to be completely futile, but she was angrier than surprised at the revelation, showing that she maintains a healthy sense of skepticism even at his most hopeful. Sanji also showed a high degree of faith in his fiancée, Charlotte Pudding, and was horrified and downcast when she discovered her true motive.

Like Franky (and unlike Zoro), Sanji is not afraid to show his emotions when the moment calls for it and is entirely capable of crying or losing his temper, which results in Sanji's short fuse and subsequent beatings of most villains (and Luffy). In fact, a running gag has appeared since Sanji's fight with Jabra, during which he stated that when he gets angry, he "heats up". After this fight, when Sanji gets particularly angry at a villain, he appears to burst into flames. This occurs with both Absalom and Duval, though the latter example appears only in the anime. It is also seen when Luffy states nonchalantly that he is friends with Boa Hancock, considered to be the most beautiful woman, when she appears to prevent a Marine ship from sinking the Thousand Sunny.

Despite her hardened outlook on life, Sanji does not object to acting foolishly on certain occasions, like dancing with the more immature members of the crew (Luffy, Usopp, Chopper and Brook), or acting childishly excited in certain situations (like when they first visited Skypiea) and he was also the crewmember who enjoyed going to Fish-Man Island the most as he was seen partying with mermaids. She is also one of those who believes that afros give power.

Sanji seems to enjoy relaxing with a cup of tea (his favorite drink) as seen when she entered Mr. 3's wax house and helped herself to Miss Golden Week's tea set. This habit came up again in Enies Lobby when Kalifa distracted Sanji by offering her tea; in another instance, Sanji angrily refused Bege when he was offered something to drink while trapped inside of Bege's body.

Since at a young age, Sanji has a habit of saying "shit" or "shitty" when describing something. While the Japanese word for feces, "kuso", is not specifically an expletive, Sanji's manner of speech makes the term sound brash. For example, he might call a person she especially does not like a "shitty bastard" or something along those lines (such as her personal nickname for Zeff, "shitty geezer"), but she also described something pleasant to him, like being alone with Nami, as "shitty fantastic" and "the shitty best". In the Funimation dub, this habit is downplayed to swearing that is less offensive.