Nanday is the baby boy of Mr. 9 and Miss Monday, born on Cactus Island during the timeskip. His name fuses his parents' old codenames, and he appears in cover stories, the Egghead arc, and a film.
Still an infant, Nanday has a tuft of unruly black hair and is usually dressed in a pale blue onesie. A little golden crown sits atop his head.
The baby comes across as happy and unbothered. Even when his father tosses and juggles him about, he shows not a trace of fear.

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Nanday entered the world on Cactus Island sometime within the two-year gap, the son of Mr. 9 and Miss Monday. In one cover story his mother reads about the Straw Hat Pirates returning while his father playfully juggles him around. In the non-canon film One Piece: Stampede, he tags along with both parents to the Pirates Festival. Later, during the Egghead arc, the people of Whisky Peak gather to watch Vegapunk's broadcast, and Nanday rests in Mr. 9's arms, untroubled by the worry on his father's face.
Mr. 9 had his son Nanday with Miss Monday, born on Cactus Island during the two-year timeskip.
Nanday was born on Cactus Island sometime during the two-year timeskip, the son of Mr. 9 and Miss Monday.
Nanday's name combines his parents' old Baroque Works codenames, Mr. 9's 'Nine' and Miss Monday's 'Monday.'
Yes, Nanday appears in the non-canon film One Piece: Stampede, where he tags along with both his parents to the Pirates Festival.
As an infant, Nanday comes across as happy and unbothered, showing not a trace of fear even when his father Mr. 9 playfully tosses and juggles him about.
Looking for more on Nanday? The One Piece Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.
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