In One Piece, Mr. 13 is a part of Baroque Works. The otter is a member of the Baroque Works. that makes up the Unluckies duo along with his friend Miss Friday. It is classified by the type D “Small but Strong”.
APPEARANCE Mr 13

Mr. 13, an otter, is dressed in the polka-dot suit. He also is wearing sunglasses.
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PERSONALITY Mr 13 One piece
Mr. 13 appears to be not willing to compromise with the people who had betrayed his leader. On his other hand it is cowardly to have disclosed his identity to the Baroque Works members from the Baroque Works to the Navy.
SKILLS AND ABILITIES Mr 13
The Frontier Agents of Baroque Works are scared at the sight of him, and also his accomplice due to their close relationship with the boss. They are his personal assassins.
DRAWING
He. 13 is extremely adept in drawing. This talent is utilized first by Mr. Zero to recognize his adversaries, then used by the Navy to find Baroque Works members.
HISTORY
They first appear in the Twin Lighthouse to be punished for the incompetence by Mr. 9, and Miss Wednesday. They are then transferred into the Little Garden to check the actions on the part of Miss Goldenweek and Mr. 3. Miss Goldenweek. They instead meet Sanji who, in the guise of appear to be Mr. 3, was speaking with Mr. zero via the Escargophone (a type of snail-shaped phone). Sanji and his accomplice attempted to deter Sanji but were unsuccessful.
Then, he was seized and rounded up by the Navy along with Miss Friday and they were required to draw the face of other employees from Baroque Works to help the Navy take down the company.