Mr. 9 is the code name of a former Frontier Agent and bounty hunter of Baroque Works. He was the assigned partner of Miss Wednesday, who was secretly Princess Nefertari Vivi of Alabasta infiltrating the criminal organization. Mr. 9 appears as a young man with short orange hair and black eyes, wearing a golden crown decorated with the number nine and having his agent number written on his face. His outfit typically includes a green suit with a white bow and a red scarf. Mr. 9 does not possess a Devil Fruit power. Instead, he relies on physical acrobatics and his signature weapons: a pair of steel bats, which he wields with showy, gymnastic movements. The bats also conceal steel ropes that he can use to trap opponents. His fighting style is acrobatic and momentum-based, but he is not among the stronger Baroque Works agents, as his techniques prove ineffective against highly skilled fighters such as Roronoa Zoro. Mr. 9's personality is marked by overconfidence and theatrical bravado; he treats combat like a performance and displays an exaggerated sense of self-importance. Despite this, he shows loyalty and courage. Initially introduced as an antagonist during the Reverse Mountain arc, Mr. 9 and Miss Wednesday attempt to kill the giant whale Laboon for food, crossing paths with the Straw Hat Pirates. After losing their Log Pose, the Straw Hats give them a ride to Whisky Peak. When Miss Wednesday's true identity is exposed by Mr. 5 and Miss Valentine, Mr. 9 tries to hold them off to allow her to escape, but he is easily defeated by Mr. 5. During the Whisky Peak arc, Mr. 9 acts as a supporting antihero. He later refuses to help Mr. 5 and Miss Valentine hunt down Miss Wednesday, and he is eliminated by Miss Valentine as a result. In the original manga, Mr. 9 survives and eventually marries Miss Monday, having a child together. His motivations stem from his role as a Baroque Works agent, but his loyalty to his partner Vivi overrides his orders, indicating a sense of honor. His key relationships include his partnership with Miss Wednesday, his rivalry with higher-ranking agents like Mr. 5, and later his romantic involvement with Miss Monday. His development is minimal but shows a shift from a minor antagonist to a briefly heroic figure who sacrifices himself for his partner. Overall, Mr. 9 is a memorable low-ranking agent whose flashy style and brief but impactful role contribute to the early Grand Line arcs.