Cast and crew
Godzilla vs. Megalon (1973)
23 cast and 30 crew, as credited. Cast in billing order; crew by department.
Cast23
Katsuhiko SasakiInventor Goro Ibuki
Yutaka HayashiHiroshi Jinkawa
Hiroyuki KawaseRokuro 'Roku-chan' Ibuki- Kanta MoriJapan Special Defense Forces Chief
Kotaro TomitaLead Seatopian Agent- Ulf OtsukiSeatopian Agent
- Sakyo MikamiTruck Driver's Assistant
- Fumiyo IkedaMan from Unit 1
Robert DunhamEmperor Antonio of Seatopia- Gentaro NakajimaTruck Driver
- Ralph JesserAntonio's Aide (Radio Operator in White)
- Shinji TakagiGodzilla
- Hideto OdachiMegalon
- Tsugutoshi KomadaJet Jaguar
- Masachika MoriJet Jaguar
Kenpachirō SatsumaGigan
Gorō NayaEmperor Atonio of Seatopia (voice)- Eisuke NakanishiNarrator
- Haruo NakajimaGodzilla (archive footage) (uncredited)
- Kôetsu ÔmiyaAnguirus
- Teruo NigakiRodan
- Eisaburo Komatsu—
- Eisuke Nakanishi—
Crew30
Directing
- Jun FukudaDirector
- Tsunesaburo NishikawaFirst Assistant Director
- Eiichi AsadaAssistant Director
- Yoshio TabuchiAssistant Director
Writing
- Jun FukudaScreenplay
- Shinichi SekizawaLyricist, Story
- Takeshi KimuraOriginal Story
Production
- Tomoyuki TanakaProducer
- Keisuke ShinodaProduction Manager
- Shizuo NakajimaProduction Assistant
Camera
- Yuzuru AizawaDirector of Photography
Editing
- Michiko IkedaEditor
Sound and music
- Riichirō ManabeOriginal Music Composer
- Masato ShimonVocals
- Eishiro HayashiSound Recordist
Art
- Yoshifumi HondaProduction Design
Costume and make-up
- Nobuyuki YasumaruCostume Design
- Tomoki KobayashiAssistant Costume Designer, Costume Design
Visual effects
- Takeshi MiyanishiVisual Effects
- Kazunobu SanpeiVisual Effects Compositor, Visual Effects
- Teruyoshi NakanoVisual Effects Director, Visual Effects
- Nobuyuki YasumaruModeling
- Tomoki KobayashiModeling
- Motoyoshi TomiokaVFX Director of Photography
Lighting
- Masakuni MorimotoLighting Technician
Crew
- Toshiro AokiVisual Effects Art Director
- Teruyoshi NakanoSpecial Effects
- Shoji OgawaSpecial Effects
- Tadaaki WatanabeSpecial Effects
- Motoyoshi TomiokaSpecial Effects