Kiwi

Seiyū: Hibi Aiko (Mozu), Shioyama Yuka (Kiwi)

Mozu (モズ, Mozu) and Kiwi (キウィ, Kiwi), also known as the Square Sisters (スクエアシスターズ, Sukuea Shisutāzu) due to their square-like hairstyle, are very loyal to Franky, and go with him everywhere. They have a tendency to mimic his reactions. When CP9 invades their hideout, they are knocked down and out by Kalifa for not letting them in. Later when the Straw Hats chase after the sea train, Puffing Tom, with the Rocketman. Mozu and Kiwi along with the rest of the Franky family, accompany them to the government headquarters, Enies Lobby, as Franky was captured by CP9. Once there they help hold off the naval marines to allow the Straw Hats go on ahead and try to rescue Franky and Nico Robin. They were blown into the Enies Lobby waterfall by cannonfire, but are currently safe thanks to the giants and Paulie. They often walk sideways in high winds due to the fact that they are blown back. It is believed that two girls (along with an adult)who were riding the Puffing Tom on its opening day are them when they were kids due to the long noses and same eyes they have.

In a recent Japanese Fan Poll, Mozu & Kiwi are currently ranked as the 38th most popular characters in One Piece.

Oda seems to enjoy naming women after birds, and this trend continues with the Square Sisters, Kiwi is named after the Kiwi, Mozu is named after the Bull-headed shrike (Lanius bucephalus), or in Japanese, Mozu.