Kamen Rider Den-O Something Missing (2007– ) Online
With the realization that the defeat of Kai may mean the departure of the Imagin, Ryotaro begins to try and prove that he can fight on his own without any assistance.
| Episode credited cast: | |||
 | Takeru Satoh | - | Ryotaro Nogami / Kamen Rider Den-O (as Takeru Satô) |
 | Tamaki Matsumoto | - | Kohana |
| Rina Akiyama | - | Naomi |
| Hideo Ishiguro | - | Kai |
 | Toshihiko Seki | - | Momotaros (voice) |
| Kôji Yusa | - | Urataros (voice) |
| Masaki Terasoma | - | Kintaros (voice) |
 | Ken'ichi Suzumura | - | Ryutaros (voice) |
 | Hôchû Ôtsuka | - | Deneb (voice) |
| Kenjirô Ishimaru | - | Owner / Narrator / Station Master |
| Rest of cast listed alphabetically: | |||
| Roi Hayashi | - | Boy |
| Takaya Kuroda | - | Albinoleo Imagin (voice) |
| Yasuharu Miyahira | - | Ozaki |
| Yuichi Nakamura | - | Yuto Sakurai / Kamen Rider Zeronos |
 | Wataru Takagi | - | Armadillo Imagin (voice) |