• Role: Cook of the Straw Hat Pirates (and part of the crew's "Monster Trio"). • Description: A cool, chain-smoking martial artist known as "Black Leg" Sanji who fights exclusively with his legs to protect his hands for cooking. He is deeply chivalrous (refusing to ever hit a woman), obsessed with romance, and dreams of finding the All Blue—a legendary sea where all four oceans meet. He is also the third son of the Vinsmoke family, though he rejected his bloodline.

• Role: Captain of the Straw Hat Pirates. • Description: A carefree, endlessly optimistic, and hyper-ambitious young man who ate the Gomu Gomu no Mi (Rubber-Rubber Fruit), giving his body the properties of rubber. His dream is to find the legendary treasure, the One Piece, and become the King of the Pirates for absolute freedom. He fights using creative, rubber-based hand-to-hand combat and is fiercely loyal to his crew.

• Role: Youngest son of the Vinsmoke family (quadruplet brother). • Description: Immature, boastful, and easily provoked with green hair. He possesses immense physical strength and winch-based capabilities in his Raid Suit, though he is often outmatched by his siblings in tactical maturity.

• Role: Patriarch of the Vinsmoke family, King of the Germa Kingdom, and supreme commander of Germa 66. • Description: A ruthless, cold-blooded scientist and monarch obsessed with military might and reclaiming the North Blue. He views his children as living weapons rather than family, leading to a deeply abusive relationship with Sanji.

• Role: Eldest child and only daughter of Vinsmoke Judge. • Description: Easily recognized by her pink hair and butterfly-themed motif. Unlike her brothers, she retained her human emotions and empathy—though she was genetically forced to obey her father's orders. Despite her cold exterior, she secretly holds a kind heart and repeatedly helps Sanji escape.

• Role: Eldest son (fraternal quadruplet with Niji, Sanji, and Yonji) and de facto leader of the brothers. • Description: Stoic, arrogant, and ruthless with red hair. He displays the highest level of emotional apathy among the siblings, fighting with light-based energy blasts through his Raid Suit.

• Role: Second son of the Vinsmoke family. • Description: Arrogant, sadistic, and hot-tempered with blue hair. He specializes in electricity-based attacks and routinely bullies those he views as weak, showing deep contempt for Sanji's humanity.

• Role: Navigator of the Straw Hat Pirates. • Description: A brilliant, sharp-witted cartographer and former thief known as "Cat Burglar" Nami. She possesses an uncanny, intuitive sense for weather and manages the crew's finances. Her life goal is to draw a complete, accurate map of the entire world. In battle, she uses the Clima-Tact to manipulate wind, rain, and lightning.