Mr. 9

Mr. 9 was Miss Wednesday's assigned male partner during her infiltration of Baroque Works. Not much is known about him other than that he dressed like a prince and fought with acrobatic skill coupled with steel bats.

Personality
His favorite phrase is "So long, baby." These were his last words to Miss Wednesday before he attempts to hold off Mr.5.

Abilities and Powers
Mr. 9 is skilled enough, as he managed to become a Frontier Agent. His body is quite flexible, as he is able to perform several acrobatic jumps and cartwheels. However, his acrobatics are useless against Officer Agents such as Mr.5.

Weapon
Mr.9 uses two steel bats with a number 9 on it. They are quite powerful, and the bats also hides a steel rope. His only two named attacks are the "Hot Blooded Bat of Guts," which, when coupled with his acrobatics, creates a powerful close-combat attack. His other attack, which uses the steel rope inside the bats, is called the "Home-Run Hide-A-Bat," which simply binds the opponent. Of course, none of these are a match for Roronoa Zoro or Mr.5. Coupled with Miss Wednesday's Peacock Slashers, the pair has a dancing theme. Mr.9 and Miss Wednesday also used a bazooka in an attempt to kill Laboon.

History
He and Vivi (known as Miss Wednesday at the time) meet the Straw Hat Pirates during the Laboon arc while trying to kill the whale to be used as food for their bounty hunting partners at Whiskey Peak. The Straw Hats gave them a ride later after they accidentally lost their Log Pose.

After Vivi was exposed by Mr. 5 and Miss Valentine, Mr. 9 tried to hold them off to allow her to escape as he had grown fond of Vivi during their time together, declaring that they were still partners (effectively placing their loyalty to one another before loyalty to the company, an act frowned upon by Mr. 5). Unfortunately, Mr. 5 apparently kills him by hitting him with a Nose Fancy Cannon attack that exploded and knocked Mr. 9 into a river.

Trivia

 * In a recent character poll, Mr. 9 is currently ranked the 42nd most popular character in One Piece.