Fleeing from his own race, Orgun—an alien being with superhuman abilities and unearthly weapons—travels to Earth to find an answer to his origin. There, he bonds with a young man named Tomoru to defend Earth against the Evoluders, who seek nothing but destruction of other civilizations.
| Actor | Role |
|---|---|
 Koichi YamaderaOrgun / Tomoru Shindo (voice) | Orgun / Tomoru Shindo (voice) |
 Takkô IshimoriForreston (voice) | Forreston (voice) |
| KKasahara IrokuKumi Jefferson (voice) | Kumi Jefferson (voice) |
 Yumi ToumaMichi Kanzaki (voice) | Michi Kanzaki (voice) |
 Norio WakamotoLang (voice) | Lang (voice) |
 Emi ShinoharaYouko Mitsurugi (voice) | Youko Mitsurugi (voice) |
| PPatrick TaggartEnglish version (voice) | English version (voice) |