★彡[ꜱᴀɴᴊɪ]彡★

Sanji is a tall, slender man who commonly wears a black suit and smokes a cigarette. Before the timeskip, Sanji is seen with his blonde hair covering his left eye. However, after the timeskip, his hair covers his right eye. Before leaving his family, Sanji styled his hair in the opposite direction and wore a yellow shirt with a black number three on it. He also wore white pants, brown boots, and a yellow bandana. After leaving his family and still a child, he started wearing a white cook's uniform. Sanji grows a goatee during the timeskip, and concept art shows this was his original design.

Sanji's most distinctive feature is his eyebrows, which are characterized as swirls with the tail end pointing at his left side, opposite in direction in comparison to his siblings Ichiji, Niji, Yonji, and Reiju.

Oda revealed Sanji's real-world nationality would be a Frenchman, in contrast to the Nazi Germany themes of Germa 66.

Sanji is mostly seen as a composed, nonchalant, and calm individual who always keeps his cool when in dire situations. However, this is contrasted by the many comedic gags he partakes in, such as when in the presence of a lady or when insulted by a crew member. Most notably, Sanji and Zoro have a great rivalry, often resorting to fighting (both verbally and physically). However, even when engaging in discourse, they still find ways to help their crew and those around them, such as when they inadvertently save Toko from death.[10]

Sanji is also known to have an enamored personality, constantly flirting with any attractive woman he sees, earning him the nickname "ero-cook". Even as a child, while working in Baratie, Sanji would become love-struck with attractive female customers and end up making mistakes in the process of cooking. He also shows jealousy towards those that he perceives to be luckier than him with women, such as when he sees Zoro with Hiyori. Despite this nature, Sanji exhibits some self-restraint due to his loyalty to his crew, as is shown by the fact that in spite of being attracted to Pudding, he sternly refused to marry her and decided to let her down gently.Moreover, due to this attitude and the multiple lectures from Zeff, Sanji follows his own strict set of personal morals in the form of chivalry. He has sworn to never attack women or let them be insulted, even at the cost of his own life and has gone so far as to only block against Kalifa, one of the main antagonists of the Enies Lobby Arc, until Nami could help him. However Sanji did not ask for help after growing up with an abusive biological father who never heeded his cries for help, Sanji never asks for help during the present-day series until the Wano Arc, where he asks Nico Robin to save him from a woman antagonist who he refuses to help. This is due to the greater vulnerability and acceptance of himself after Luffy saves him from an arranged marriage during the Whole Cake Island Arc.

Sanji is kind and often saves others in danger, even at the cost of his own safety. Oftentimes he frames this kindhearted nature as mere chivalry towards women, but in his actions he consistently helps men as well. Having suffered from starvation among the litany of abuse put upon him by his father, he never denies a person a meal regardless of their intentions, as shown when Don Krieg attempted to take over the Baratie during his introductory arc. Frequently during the series he separates himself from everyone else to play a clandestine role which subsequently helps the crew and other allies survive. In Water 7, Sanji separates from the crew and finds Nico Robin boarding the Puffing Tom on its way to Enies Lobby for her execution. In Thriller Bark, he offers to give up his life in exchange for Luffy's. In Zou, Sanji decided to leave the crew in order to confront his family and protect the Straw Hats from the Fire Tank Pirates. In Wano, Sanji asks for help from another for the first time when he asks Robin to save him.