When she was young, Doruyanaika had freckles on her cheeks, pronounced lips, and a short bob cut. She wore a light sleeveless shirt. It is unknown what she looks like currently.
Having beat up Kid and Killer for laughing at her, she does not take kindly to teasing.
Doruyanaika was Kid and Killer's first crush. One day, they ate udon noodles in curry soup for lunch together, and Doruyanaika got it all over herself. Because she was covered in brown sauce, Kid and Killer laughed at her, and she beat them up for it. She no longer spoke to them, and Kid and Killer still hate curry udon noodles to this day due to their memory of the interaction.
Her name is a pun on Shiru tondoru ya nai ka (汁飛んどるやないか,Shiru tondoru ya nai ka? meaning "Isn't the broth flying?").
↑ 1.01.11.21.3SBSOne Piece Manga — Vol. 87 (p. 174), Shiruton Doruyanaika is mentioned when Oda answers a question about Kid and Killer.
↑SBSOne Piece Manga — Vol. 98 (p. 28), Doruyanaika's appearance is shown.