Twin Blood is an alternate version of Blade and Evil's first battle, with drastically different character and mecha designs from the rest of the series. Blade/D-Boy does not need Pegas to transform and the armor more closely resembles the Radam humanoids from Tekkaman Blade II.
| Actor | Role |
|---|---|
 Megumi HayashibaraAki Kisaragi | Aki Kisaragi |
 Takehito KoyasuShinya Aiba | Shinya Aiba |
 Toshiyuki MorikawaTakaya Aiba | Takaya Aiba |