Niji Vinsmoke (originally Vinsmoke Niji), also known by his alias “Electric Blue” (originally “Dengeki Blue“; デンゲキブルー, Dengeki Burū), is the second son of the Vinsmoke family and commander of the crime organization Germa 66. However, as a descendant of the Vinsmokes, he is also a prince of the Kingdom of Germa just like his quadruplet brothers.
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Appearance

Niji Vinsmoke is a young slender man. Just like his siblings, Niji’s eyebrows are curled in spirals at their ends, but in the exact opposite direction of Sanji’s. He possesses noticeably blue hair coiffed to the right. He wears basket glasses as well as horned headphones, each with a sixty-six printed on them, and a light blue bandana.
Just like his siblings and his father, Niji also wears a so-called Raid Suit in battle, which is tailored to him. This is mainly kept in blue and additionally yellow. He also wears yellow-blue boots and yellow gloves as well as a black cape with a blue two printed on it. His yellow belt buckle represents a skull pierced by lightning.
During their stay at Big Mom’s castle, Niji changes his clothes. There, he wears a white shirt with a blue tie and black pants. For his brother’s wedding ceremony, he chooses a blue suit as well as a white shirt and dark gloves. In addition, he wears a white cape and a light blue scarf.
Personality
Niji is proud of his royal lineage. He regards his servants as inferior and pirates are scum to him. As a killer and warmonger, he doesn’t care about the lives of other people, which is why he doesn’t hesitate to sacrifice the lives of his subjects. All that matters to him in his work is that his client can pay out more money than the other party. Due to his father’s genetic manipulation, he became a cold-hearted and fearless person who cannot feel empathy or sympathy. Even in the eye of death, Niji merely began to laugh at their seemingly hopeless situation. Still, Niji can also show a helpful side when it comes to his family. When Reiju got into trouble fighting the Big Mom pirate gang, Niji wanted to help her but was held back by Ichiji. Later, he wanted to rush to the aid of his father, who was attacked by Big Mom.
His values are completely at odds with Sanji’s and make him angry, which is why he has always had a disdainful opinion of him. Niji is quite temperamental and quick to provoke. This was made clear when he threw a plate of food at Chef Cosette because he was unhappy with her dish. When Sanji caught the plate and the food fell to the floor, Niji was disgusted that Sanji ate the food off the floor. In revenge for Sanji’s intervention, Niji did not hesitate to brutally beat up Cosette. Despite Niji and Sanji having a bad relationship, he, his siblings, and his father supported the Pirate Alliance in their fight against Big Mom. They didn’t want to be in debt to the pirates who had previously saved their lives. On Cacao, the Vinsmoke siblings also showed their willingness to help towards Sanji. They protected Sanji and Luffy from a volley of pistol bullets, and Niji supported them in their escape from the island, even as he continued to call his little brother good-for-nothing.
One of the few things he has in common with Sanji is his preference for attractive women. Unlike his younger brother, however, Niji still has some self-control and is not easily dazzled by a woman’s beauty. When Yonji said he was jealous of Sanji for marrying a beauty like Pudding, Niji asked if he was crazy since that meant living a life under Big Mom.
Skills & Strength

Niji is a trained assassin as a family member of the Vinsmokes. He is also skilled in the use of the Vinsmokes’ advanced war technologies. His father’s clone troopers are programmed to obey him without resistance, even if it costs them their own lives.
As an unborn child, his father used his genetic technologies to give his sons and daughter superhuman strength. Since then, they have been training their abilities and were stronger and faster than the average adult even as children. In addition, the children formed an exoskeleton, which makes them more resilient and similar to the technology Tekkai protects against blunt force trauma. Not even normal pistol bullets can damage his body, which is why Charlotte Pudding was also equipped with special ammunition for her revolver to be able to penetrate the bodies of the Vinsmoke offspring. Niji also showed high mental strength as he did not collapse due to Big Mom’s Haoushoku.
Niji is an excellent hand-to-hand fighter. One kick from him was enough to knock Cosette to the ground, though he stopped his attack mid-air. He is also capable of charging certain parts of his body with electricity. A well-aimed kick to his face from Sanji also survived Niji relatively unscathed. He was also strong enough to knock back Charlotte Oven, thus saving Chopper. A special ability of his is that he can move extremely fast. Thus, he saved Sanji and Luffy on Cacao from being hit by a missile, moved them further towards the harbor, and simultaneously took out several Big Mom pirates with his sword. With his strength, Niji was also able to fling them far into the airspace of the harbor.
Past

Niji was born as the second son of Vinsmoke Judge in the kingdom of Germa. Noble blood flows through him, and since early childhood he and his siblings trained to one day lead the Germa 66. To that end, his genes were modified by Judge to develop an extremely robust exoskeleton as a young boy. The training would eventually turn them into superhumans. Unlike his siblings, Judge’s gene modifications did not work on Sanji. This made him a target for ridicule and beating by his brothers. Since Sanji was far behind his brothers physically and was also passionate about cooking, Ichiji, Niji, and Yonji bullied him regularly. Just like their father, they felt Sanji was a disgrace to the Vinsmoke family. That’s why they didn’t mourn him when he ultimately left Germa. Instead, they imagined with amusement how Sanji might have died.
Present
Broc Coli – The End of the War
Three days before the wedding ceremony between Sanji and Pudding, Ichiji and Niji led an army of Germa 66 on Broc Coli. The army was hired by the people of the island, as it was in a two-year civil war and the country stopped receiving arms shipments after Doflamingo’s arrest. The Vinsmoke brothers and Germa 66 brought the situation under control within four hours. They then made their way to Whole Cake Island to attend their brother’s wedding.
Whole Cake Island – The Arrival

Two days later, the Germa 66 ships arrived in Charlotte Linlin territory. A short time later, the entire Vinsmoke family reunited in the Germa throne room and dined together. While there, an altercation ensued between Sanji and Niji, as the latter refused to finish his food. Sanji called him a spoiled prince who did not appreciate the value of food. Niji threw his plate at Cosette, but Sanji caught the plate in time. This made Niji angry, so he prepared an attack on his brother. Suddenly, Judge interfered to prevent an external injury to Sanji just before the wedding. When Judge then threatened Sanji with Zeff’s murder, the Vinsmoke children left the room. Niji later encountered Cosette, whom he brutally beat up. The four twin brothers subsequently met again in the Germa’s secret lab, with Sanji wanting to punish Niji for his offense to Cosette. However, Sanji stood no chance against his three brothers and was beaten up by them.
Finally, the Vinsmoke family made their way together towards Whole Cake Chateau. The carriages encountered Luffy and Nami, who had just come out of the Forest of Temptation. When Sanji turned down Luffy’s request to come back with them, Niji smiled. After their fight, Sanji and his family continued on their way to the castle. Once there, they met Big Mom, with whom they ate some food. Afterwards, Big Mom led them to her library, where she had locked up her collection of extraordinary races. After moving into their guest room alone, Judge announced to his sons that Sanji and Pudding would be living in the Kingdom of Germa after the wedding, so that he could take Pudding hostage if necessary. Though Niji was initially worried that Big Mom might try the same thing with Sanji, Ichiji reminded him that she wouldn’t care at all. That night, the Vinsmokes were already celebrating the imminent recapture of the Northblue, toasting Sanji for finally being of use to them.
The plan to destroy the Vinsmokes

The next morning the Vinsmokes prepared for the wedding ceremony. They were taken to the roof of the castle by Big Mom’s underlings, where they were seated at their table. When the bride and groom were finally to be married, Charlotte Katakuri suddenly intervened, having looked into an uncomfortable future. As a result, things escalated on the rooftop as countless Luffys stormed out of the wedding cake. After Brook destroyed the image of Mother Carmel, Charlotte Perospero sprang into action and bound the Vinsmokes to their seats with his devil powers. As a result, the Vinsmoke family was surrounded with guns. Big Mom had planned to wipe them out and claim their technology all to herself. When Judge realized what Big Mom had in mind, he began to cry. At this, Niji just laughed at their situation. Big Mom now realized that the image of Mother Carmel was broken and began to let out a bloodcurdling scream. Her haoushoku also caused her children, who were surrounding the Vinsmokes, to collapse. Sanji freed his family from Perospero’s shackles and the Straw Hats handed the Vinsmokes their Raid Suits.
After donning their battle suits, they rescued the Straw Hats from the Big Mom pirates. They then retreated to Capone Bege’s fortress for the time being. However, since Bege was completely defeated by the Big Mom pirate gang and also attacked by Big Mom himself, the Vinsmokes decided to fight. Bege wanted to break up his fortress and escape with the help of Caesar, while the Vinsmokes backed them up. Perospero built a Candy Wall to stop Caesar and Bege, but the Vinsmoke brothers were able to destroy it with their combined forces. Yonji and Niji then rushed to the aid of their father, who was struck down by Big Mom. However, they themselves were quickly defeated by the Empress. Before Big Mom could execute her enemies, the Tamatebako filled with explosives suddenly exploded at the base of the castle. This caused the Whole Cake Chateau to collapse. In the confusion, Germa 66 finally managed to escape.
Final Battle on Cacao

The Germa 66 made it back to their kingdom still anchored in the Apricokko River. They defeated Nutcake, Basskarte, Dosmarche, and their armies and threw them into the sea. Via Den-den Mushi, Niji Mont d’Or fooled them into thinking the Germa 66 had been completely dealt with. Having learned where the Straw Hat Pirates was sailing to, the Germa 66 now set sail again as well. The next morning, they arrived in time at Cacao Island, where most of the Charlotte family had gathered. Just as Sanji and Luffy were surrounded by the Charlotte siblings, the Germa 66 fleet interfered and destroyed several ships at the harbor. The Vinsmoke siblings, on the other hand, showed up on the island and protected Luffy and Sanji from a volley of pistol bullets.
As Sanji tried to escape with Luffy, one of the pirates attacked with a missile. Niji then grabbed Sanji and Luffy with his superhuman speed, saving them from being hit. While simultaneously taking out some pirates with his sword, Niji frantically transported the two towards the harbor. Before throwing them towards the sea to the Thousand Sunny, he secretly put a Raid Suit in Luffy’s pockets for Sanji. The Vinsmokes then assisted the Straw Hats in their escape from the territory and continued to fight the Big Mom pirates. In order to take on the superhumans, the pirates eventually used their Candy Jacket ammunition. Regardless of their injuries, however, the Vinsmokes continued to fight until they received word that the Straw Hat Pirates had escaped Totto Land. Ichiji then ordered her army to retreat, but just then the reinvigorated Big Mom landed on Cacao.
Miscellaneous
- As with his siblings, there is a number word in Niji’s name. In his case, it is Ni for two, indicating that he is the second son of the Vinsmoke family.
- His favorite foods are blueberries and scotch.
- According to One Piece Magazine Vol. 3, his alias was originally supposed to be “Wind Blue” (ウインドブルー, Uindo Burū).