 Takeshi KusaoSho Fukamachi / Guyver | Sho Fukamachi / Guyver |
 Yuko MizutaniMizuki Segawa (voice) | Mizuki Segawa (voice) |
 Hideyuki TanakaAgito Makishima / Guyver III (voice) | Agito Makishima / Guyver III (voice) |
 Hirotaka SuzuokiMasaki Murakami (voice) | Masaki Murakami (voice) |
 Hideyuki UmezuTakasato (voice) | Takasato (voice) |
 Hirohiko KakegawaCronos Combatant A / Enzyme II | Cronos Combatant A / Enzyme II |
 Seizo KatoDr. Hamilcar Barcas (voice) | Dr. Hamilcar Barcas (voice) |
 Hidekatsu ShibataRichard Guyot (voice) | Richard Guyot (voice) |
 Chieko HondaNatsuki Taga/ Barcas's Aide (voice) | Natsuki Taga/ Barcas's Aide (voice) |
 Kozo ShioyaTetsuro Segawa (voice) | Tetsuro Segawa (voice) |
 Maria KawamuraShizu Onuma (voice) | Shizu Onuma (voice) |
 Banjo GingaGaster (voice) | Gaster (voice) |
 Ikuya SawakiZX-Tole (voice) | ZX-Tole (voice) |
 Jun HazumiGenzo Makishima (voice) | Genzo Makishima (voice) |
 Issei FutamataAptom (voice) | Aptom (voice) |
 Jurota KosugiElegen (voice) | Elegen (voice) |
 Katsumi SuzukiAnnouncer / Cronos Combatant (voice) | Announcer / Cronos Combatant (voice) |
| Katsumi SuzukiScientist / Teacher (voice) | Scientist / Teacher (voice) |
 Hiroyuki OshidaCronos Combatant (voice) | Cronos Combatant (voice) |
 Hiroshi NakaCronos Combatant (voice) | Cronos Combatant (voice) |
 Kazumi TanakaAota (voice) | Aota (voice) |
