Peterman

Peterman is the head of a kidnapping gang called the Hound Pets located at Shabondy Archipelago. He is informed by bounty hunters as they were wounded they were most likely those that tried to attack the Strawhats for their bounties earlier that Camie a mermaid is at Shabondy Park. He then arranges a deal of 10 of her final selling price to the bounty hunters and goes leaves to kidnap her. He later takes her to the Human Auctioning House to come back after shes sold for his share of the money. He never gets the chance however as the SH managed to rescue her then visit his hideout and give him a deserved beating for his actions. Source: One Piece Wikia