Sanji

"Black Leg" Sanji, born as Vinsmoke Sanji, is the cook of the Straw Hat Pirates, as well as the former sous chef of the Baratie. He is also the third son and fourth child of the Vinsmoke Family, thus making him a prince of the Germa Kingdom, until he officially disowned them twice. Despite Sanji renouncing his surname Vinsmoke, the World Government labels it as part of his name on his wanted poster. He is officially the fifth member of the crew and the fourth to join, doing so at the end of the Baratie Arc. Since he was born in North Blue, he is the first Straw Hat not to originate from East Blue. He is one of the top four fighters in the crew alongside Luffy, Zoro, and Jinbe. His dream is to find the rumored chef's paradise, All Blue, which is where East Blue, West Blue, North Blue, and South Blue meet, along with their wildlife. Due to the events on Whole Cake Island, his current bounty is Beli330,000,000, giving him the third highest bounty in the crew after Luffy and Jinbe. Sanji is one of the crew's top four fighters along with Luffy, Zoro, and Jinbe. He currently has the third highest bounty in the crew after Luffy and Jinbe. While Luffy usually fights the strongest enemies, Sanji and Zoro usually end up fighting with the enemies considered second or third to the primary threat. Occasionally, Sanji will take on an opponent explicitly weaker than Zoro's. An example of this is when Sanji fought Jabra of CP9, who had a slightly lower power level than Kaku, who lost to Zoro.

The introduction of Douriki during the CP9 Arc is one of the only times in the series that opponents' strengths have been measured numerically. However, Sanji and Zoro's opponents can often be characterised as matching (or countering) their particular combat styles, such as how Sanji fought another leg-style combat user, Mr. 2, during the Alabasta Arc while Zoro fought the blade-focused Mr. 1. Self-taught since childhood and also personally trained by Zeff, Sanji is an exceptional culinary master of the highest caliber, possessing immense knowledge and the capability of preparing almost any kind of delicious food with a strong sense to the aesthetics of cooking. He cooks with amazing speed and dexterity, particularly in his use of knives. His sense of taste is also not lacking. Often, he is able to deduce the qualities of aspects (i.e. ingredients, and method of cooking and preparations) involved in a prepared dish in a very short period of time. He has an extremely sharp sense of smell, as he correctly figured out all the ingredients Streusen used for the wedding cake and even perfectly figured out Streusen's secret recipe solely by its fragrance, a feat that completely shocked Chiffon and the 31 Head Chefs of Whole Cake Island. Attack Cuisine is a special kind of cooking only found in the Kamabakka Kingdom.

According to Sanji, the cuisine emanates a powerful aura and flavor to the one consuming it. It is said by Emporio Ivankov that it builds up the physical side of the human body; he even vouches for it as the reason why the inhabitants of the Kamabakka Kingdom have fit and powerful physiques. While "Attack Cuisine" is not denied to outsiders, and is in fact freely offered, only the people who have gone through the "Bride Training" and have become users of the Newkama Kenpo are told the 99 vital recipes of the Attack Cuisine. Exceptions to this rule may occur, as seen when Ivankov gave Sanji a challenge to earn the recipes. The challenge was to defeat the 99 Newkama Kenpo masters who are in possession of the 99 recipes while avoiding becoming an okama. Sanji accepted the challenge and eventually conquered it. Due to years of extremely hard training under Zeff since childhood, Sanji has gained extraordinary superhuman physical prowess, speed, and agility, which enables him to use an array of handstands for a kick-based martial art, which makes him immensely versatile in combat. His training in a kick-based martial arts also grants him colossal leg strength, enabling him to break even the hardest materials and defeat the strongest enemies using the tremendous power of his kicks. He can easily destroy boulders and metal weapons and effortlessly overpower giant sea monsters such as Bananawani and Momoo. Sanji even managed to topple Oars, a monstrous giant, by kicking him in the foot. In an SBS, Oda stated that Sanji's kicking power is 21 Bats (the power to break 21 wooden bats in one kick).

Under Zeff's strict tutelage Sanji became an extremely powerful master of a kick based martial art he created named the "Black Leg Style" which is a unique combination of Brazilian Capoeira, French Savate and Korean Taekwondo, able to use powerful kicks with supreme versatility. He has also stated that the reason he fights using is that he does not want to risk damaging his hands as he needs them to cook, thus instead of punches, Sanji incorporates handstands into the Black Leg Style. He is also able to use one-handed handstands, and execute consecutive back handsprings (as seen during his fight with Jabra) to augment the force and range of his kicks. He could easily overpower numerous enemies at once, such as pirates, Marines, and Government agents. In the Enies Lobby Arc, Sanji reveals a new ability - Diable Jambe, the power to heat his lower legs to a temperature so high that they glow bright red, by spinning rapidly in place, which causes his attack to be more powerful. "Diable" means "Devil" in French and it's also the name of a kitchen tool. It's probably also a reference to the "sauce à la diable", a French spicy sauce. "Jambe" means "Leg". The kanji used, mean devil wind foot (- wind foot - is a play on the term kazaashi, meaning wind speed). The aforementioned attacks also have the word Diable Jambe preceding it (ex. "Diable Jambe: Flambage Shot"). The heat of his attacks is so high that contact for even a second could set a person ablaze. Sanji used this ability during his fight with Jabra, in which his normal attacks were not as effective due to his active usage of Tekkai. With the heat of his new ability, Sanji overcame his inability to smash through Tekkai by burning through it instead. By using the technique "Frit Assorti" in Diable Jambe against Oars, Sanji was able to effectively deflect his direct "Gomu Gomu no Bazooka" in order to protect Robin with a single kick. Diable Jambe has improved to the point that his entire leg is now enveloped in large flames. It is now so powerful and hot that even underwater, he is able to scorch one of the Kraken's tentacles with "Bien Cuit: Grill Shot", severely injuring it. Later at Gyoncorde Plaza, as he was airborne (Sky Walk), he executed another new move called "Poêle à Frire: Spectre", where he stomps his opponents repeatedly with high accuracy and speed. Although he has not shown the ability to use it, Sanji knows about Haoshoku Haki, something he (along with the rest of the crew) had not shown any knowledge of during the first half of the series. Kenbunshoku Haki is Sanji's speciality concerning Haki. During his stay on Kamabakka Kingdom, Sanji has trained his Kenbunshoku Haki to become a proficient user of this Haki. He can sense the presence, strength, emotions, and intent of others, and was even able to dodge a jellybean shot by Charlotte Katakuri despite Katakuri having a higher level of Kenbunshoku Haki. It was stated by Luffy that Sanji possesses Busoshoku Haki after Law asked who could fight Caesar Clown who's a Logia User. However, he hasn't displayed this Haki until he fought his father blocking his spear by enhancing his right leg much to Judge's surprise although, he still seemed to have taken some minor damage. Sanji was able to damage Luffy's rubber body when they fought on Whole Cake Island. Germa 66 had created a Raid Suit specifically designed for Sanji to use, which was secretly hidden and given to him as a parting gift during the Vinsmokes' assistance in his and Luffy's escape from Cacao Island. Sanji initially refused to put it on, but donned it while at Wano Country. The suit gives Sanji a black Germa outfit and cape with the number 3 on it, as well as jet-propelled boots. Uniquely, it also gives him a mask to wear over his nose and mouth, and slicks the front of his hair into two parts, one pointing up and one pointing down. Like the other Vinsmokes' Raid Suits, it grants Sanji the ability to fly and strengthen his kicks with propelled boots, and serves as an armor to protect him from attacks.