Takeru fights to rescue a mermaid living in an underground pool being used by Igam to cause massive earthquakes to the surface.
| Actor | Role |
|---|---|
 Ryôsuke KaizuTakeru / Red Mask | Takeru / Red Mask |
| KKouichi KusakariKenta / Black Mask | Kenta / Black Mask |
| IIssei HirotaAkira / Blue Mask | Akira / Blue Mask |
| YYuki NagataHaruka / Yellow Mask | Haruka / Yellow Mask |
 Kanako MaedaMomoko / Pink Mask | Momoko / Pink Mask |
 Hayato TaniCommander Sanjuurou Sugata | Commander Sanjuurou Sugata |
 Tomoko IkedaLelai | Lelai |
 Eisuke YodaHorn Doggler (voice) | Horn Doggler (voice) |
 Seizo KatoEarth Emperor Zeba (voice) | Earth Emperor Zeba (voice) |
 Keijirō ShigaEarth Imperial Commander Baraba | Earth Imperial Commander Baraba |
 Yoshinori OkamotoEarth Imperial Ninja Oyobu | Earth Imperial Ninja Oyobu |
 Mina AsamiEarth Imperial Prince Igam | Earth Imperial Prince Igam |
| KKaori KubotaEarth Imperial Ninja Fumin | Earth Imperial Ninja Fumin |
 Takuzō KamiyamaEarth Curiosities Beast Anagmas (voice) | Earth Curiosities Beast Anagmas (voice) |
 Kaoru ShinodaEnergy Beast Okelampa (voice) | Energy Beast Okelampa (voice) |