This is a list of characters throughout the Japanese tokusatsu series Kamen Rider Den-O.
Kamen Rider Den-O fights against the Imagin with the aid of his partners. Most of them reside within the train known as the DenLiner, a train that traverses the sands of time.
Ryotaro Nogami (野上 良太郎 Nogami Ryōtarō?) is a very unlucky young man. When he first appears, he managed to lodge himself on his bike in a tall tree, due to his horrific streak of bad luck. But though jinxed, Ryotaro keeps looking on the bright side. He also keeps his name tag in his wallet so it can be returned to him when it is stolen. He is the one who discovers the Rider Pass, and after persuasion from Hana, decides to use it for the betterment of mankind as the eponymous Kamen Rider Den-O. He is commonly referred to as a Singularity Point, who can consciously overpower an Imagin who possesses him, as well as exist outside of time.
Ryotaro is portrayed by Takeru Satoh (佐藤 健 Satō Takeru).
Hana (ハナ) is a Singularity Point and the first DenLiner passenger Ryotaro met, convincing him to become a Kamen Rider while explaining the uses of the Rider Tickets and the Rider Pass. She said that she fights so that she can protect and preserve the flow of time from the Imagin, and she made a contract with the DenLiner's Owner to do so. She originates from a future destroyed by Imagin chaos, still existing because of her status as a Singularity Point. With no timeline to call her home, Hana is filled with malice and spite towards the Imagin, making her capable of subduing the Tarōs when they get out of line, especially Momotaros with a simple punch to the head with force equal to a truck's. Ironically, Hana grew a soft spot for the Tarōs over the course of the series, briefly crying when Urataros, Kintaros, and Ryutaros disappear, though she refuses to admit it. Hana usually worries and looks after Ryotaro, treating him like a younger brother. Over time, the tracks that represent Hana's future are being recreated, resulting with Hana turns back into a child form. Despite being in the body of a ten-year-old, under the alias of Kohana (コハナ), she is still able to pay attention to the Tarōs when their shenanigans aboard the DenLiner get out of line. In the finale, she is revealed as the daughter of Airi and Sakurai (thus being the niece of Ryotaro), the true key to the Junction Point and Kai's downfall as her future connects to the present. However, as her place in time is yet to be restored, Kohana lives on the DenLiner to await for her time. She becomes a member of the DenLiner Police at one time, aiding Kazuya Suzuki by taking out Kuroki's men singlehanded.