![](https://cdn.animecharacters.io/images/characters/large/36405-10975b01.jpg)
Den (デン)
Den is Tom's younger brother. He is a bering wolffish merman. He is also a shipwright and Sea Forest researcher. First Appearance: Chapter 616 (Source: One Piece Wiki)
Den is Tom's younger brother. He is a bering wolffish merman. He is also a shipwright and Sea Forest researcher. First Appearance: Chapter 616 (Source: One Piece Wiki)