16-year-old male. Whimsical and curious, he is always causing trouble. He is the fourth son (fifth child) of the Straw Hat family and mostly plays with Usopp and Chopper. He loves meat very much and always makes excuses just because he wants to eat.

21-year-old male. Blunt and cool-headed, he always returns home late. He is the eldest son (first child) of the Straw Hat family. He fights with Sanji a lot and takes many naps on weekends because he is tired. He usually gets home at 8 PM, but as late as 1 AM when he's delayed, or as early as 5 PM when he's early.

18-year-old female. A clever and smart model student. Whenever Luffy causes trouble, she scolds him instead of their mother, Robin. She is the eldest daughter (third child) of the Straw Hat family. She attends over 10 different academies and, like Zoro, tends to come home late. She loves tangerines so much that she brings back tangerine wrappers every time she goes to the market.

17-year-old male. Whimsical and cowardly, he is always at home worrying that Luffy might cause an accident. He is the third son (fourth child) of the Straw Hat family and is often exhausted from doing the housework. He hates mushrooms and loves fish very much.

20-year-old male. Protective and warm-hearted, but he fights with Zoro every single day. He is the second son (second child) of the Straw Hat family. He is in charge of the cooking and is a professional chef. He smoked temporarily starting from age 19, but he quit smoking after one year.

10-year-old male. Lively and bright, he receives a lot of love from the family. He is the youngest (sixth child) of the Straw Hat family. He is always being held in Zoro's arms and loves his mother, Robin. He loves sweets, especially cotton candy.

35-year-old female. Kind and warm, she reads books habitually. She is the mother of the Straw Hat family. She takes great care of Chopper, looks after Zoro and Nami when they are tired from studying or work, and always smiles warmly even when Luffy causes trouble. She likes sandwiches and runs a flower shop.

38-year-old male. Energetic and works as a DJ. He is the uncle of the Straw Hat family. He often plays with Luffy and always goes out to have fun with Usopp, Luffy, and Chopper on weekends. He drinks cola frequently and always eats hamburgers for lunch.

78-year-old male. Lively and cheerful, he used to be a singer in the past. He is the grandfather of the Straw Hat family and mostly composes music while playing the guitar. He drinks milk often in the morning and currently works as a composer instead of a singer.

42-year-old male. Cheerful and serious, he was a competitive swimmer in his youth. He is the father of the Straw Hat family and takes the best care of the eldest son, Zoro. His current occupation is a fisherman, and he gets off work at the same time as Zoro and Nami.