Vinsmoke Sanji

"Black Leg" Sanji, born as Vinsmoke Sanji, is the cook of the Straw Hat Pirates. He is the fifth member of the crew and the fourth to join, doing so at the end of the Baratie Arc. Sanji was born in the North Blue into the Vinsmoke Family, the reigning royal family of the Germa Kingdom, along with his three brothers on the same day, with Sanji being the third son of the family, thereby making him the kingdom's third prince. Sanji's father, Vinsmoke Judge, planned to genetically enhance all of them before birth to make them have superhuman abilities and no emotions, and thus turn them into perfect soldiers in the future. His mother, Vinsmoke Sora, was against this practice and while being still pregnant, she took a drug that would ensure they would grow as normal humans with emotions. This intent resulted successful only on Sanji, at the cost of severely weakening her own health beyond recuperation.

While Sora was still alive, Sanji once prepared a meal for her. Even though the meal was ruined while Sanji was delivering it to her hospital, it made her smile and she decided that she would only eat what he had made for her, sparking an interest in cooking for Sanji. Sanji quickly became anxious upon realizing that his body was changing, with him worrying that he may become emotionless like his brothers. This resulted in him running away from the Live Floor so that he could have time to think to himself. As he fled, he was shot at by a few members of the Beasts Pirates, but the bullets simply hurt Sanji and did not pierce his skin. Queen pursued Sanji and continued to attack him, still demanding that Sanji fight in his Raid Suit. Queen eventually caught up to him, and Sanji engaged him in combat again. Sanji then found himself in the Pleasure Hall, where he happened to be attacked by several geishas who were hiding inside and accused him of hurting a young geisha, something Sanji could not imagine as he vowed to never hurt a woman. Confused by this accusation, Sanji got lost in thoughts, fearing he finally has become just the same as his brothers. When Queen caught up to him, he did not notice him, instead recalling the moment he came across the geisha when the next thing he knew was seeing the fear in her eyes and her laying bleeding on the ground. As he was then thinking about which version of him could be more useful to Luffy, a man willing to never hurt a female or an emotionless warrior of science, ready to crush anyone on command, he then made up his mind. He pulled out the canister containing the Raid Suit, but instead of putting it on, he destroyed the Raid Suit, much to Queen's disappointment. Following then, he would contact Zoro, who was in a heated battle with King, explaining he snuck a Den Den Mushi into his clothes should he get lost. After telling Zoro he was confident they would win, to which Zoro agreed, he was then tasking Zoro to kill him should he really lose his humanity after the raid, to which Zoro, although confused, agreed. After thanking him, he seemingly turned invisible, berating Queen for his comments on him being a Germa soldier and then hit Queen with Hell Memories. Sanji's attack was able to make Queen get blown back quite a distance but Queen eventually makes his way back to Sanji, where he reveals he heard him talking with Zoro earlier and believes that he can't win against King, telling him that he is a Lunarian, and they could survive in any harsh conditions before they were wiped out. When Sanji asks why that was, Queen mockingly tells him to find out himself before preparing to fire another laser at him. Queen then showcased that he was able to copy and utilize all of Sanji's brothers abilities, much to Sanji's anger and annoyance, once again yelling at Queen to not call them his family. Sanji was hit by two of Queen's copied abilities, Sparking Queen and Henry Queen before Queen, ignoring Sanji's comments and boasting about his scientific geniuses, grapped Sanji with Winch Queen and smashed him through several walls in a circle. Sanji, however, was able to kick himself out of the grap, destroying Queen's mechanical arm in the process. Queen angrily shouted at Sanji for the destruction of his arm, with Sanji once again telling Queen he did warn him not to speak of the Vinsmoke Family in Sanji's presence, only for Queen to express his right of free speech. Sanji then kicked Queen in the stomach with Flanchet Flayer, assuming Queen must be exhausted and weakened by Sanji's attacks, even in his enhanced form, before reassuring Queen he is not the same person he fought on the Life Floor. Queen, however, was once again able to surprise Sanji by having effectively copied Sanji's Raid Suit ability to turn invisible, with Sanji doing the same, due to his enhanced speed, leaving Queen astonished at Sanji's speed. Some, the geisha Sanji previously thought he had hit, then walked through the floor to get her pet mouse, Chuji. Queen, seeing her, foolishly revealed he punished her earlier for declining his services earlier after Komurasaki's death. Furious at this revelation and the fact that he accused himself of breaking his most important principle, Sanji then combined his genetic modifications with his Armanent Haki to develop a stronger variant of his Diable Jambe technique, Ifrit Jambe. After shouting at Queen for striking a woman, Sanji sent himself down onto Queen, unleashing a barrage of attacks, which culminated in his new attack, Boeuf Burst, hitting Queen and sending him flying out of Onigashima. Sanji then turned towards Osome, showing her Chuji whom he saved, reminiscing about his childhood and feeding little mouses, before collapsing in front of O-some.