*Yamato is Born as Kaidou's daughter and groomed from a young age to be his heir, Yamato instead developed a profound admiration for the legendary samurai Kouzuki Oden. After Oden's death, Yamato decided to become like him, impersonating him and adopting his mannerisms. As a result of this desire to emulate Oden.

This path has put Yamato at odds with Kaidou, with much of his life being spent imprisoned on Onigashima. Yamato befriended Portgas D. Ace during his visit to Wano Country, and after learning of Ace's death waited for the arrival of his sworn brother, Monkey D. Luffy. Initially desiring to join Luffy's crew, Yamato ultimately decided to remain behind in Wano to help protect it from outside forces, though he still intends to join them in the future.

Yamato is a major ally of the Straw Hats during the Wano Country Arc. He also is the central character from the Oni Child Yamato's Golden Harvest Surrogate Pilgrimage Cover Page serial.

Yamato is a rather tall 28-year-old young woman, being twice Luffy's height. Yamato has long white hair tied into a ponytail using orange rods. Yamato's white hair eventually fades into an aqua-green and bluish color the further it goes down. Yamato also has orange-colored eyes with well-defined eye lashes. One of Yamato's most distinctive feature is their red horns. Yamato is considered extremely attractive, with Sanji and Brook immediately falling for her beauty.

Clothing wise, Yamato chose to don a similar type of clothing reminiscent of Kozuki Oden. In the past, Yamato also commonly wore a Hannya mask and is also seen wearing gold hooped earrings. Yamato, also known by their epithet as the Oni Princess, is a major character of the One Piece franchise who first appeared in the Wano Country Arc. Yamato is the daughter of the former member of the Four Emperors of the Sea, Kaido, who also holds many epithets.*