|This article is about a/an ally in Kamen Rider Den-O.|
- "Thank you for aboard the Denliner today.Your attendant today is...Me! Naomi! If you have any requirements, please call me Naomi-Chan."
- ―Naomi's introduction[src]
Naomi (ナオミ) is the stewardess of the DenLiner's dining car, the setting of nearly all of the action aboard the DenLiner.
Despite her efforts, Naomi usually serves poorly made coffee (she once put wasabi in the coffee as an experiment), though the Imagin cannot resist it. She is extremely hyper and does not get surprised easily, sticking to her belief of making only coffee. Naomi is also good friends with the Tarōs Imagin and is usually seen playing with Ryutaros.
During the series finale, Naomi takes the DenLiner back from the New Mole Imagin and uses it to go into the past to retrieve Urataros, Kintaros, and Sieg for the final battle with Kai's army of Imagin.