Directed by
| Noriaki Yuasa | ... | (as Kenji Yuasa) |
| Shigeo Tanaka | ... | (earlier film clips) (uncredited) |
Writing Credits (in alphabetical order)
| Niisan Takahashi | ... | (as Fumi Takahashi) |
Cast (in credits order)
| Kôjirô Hongô | ... | Scout Master Mr. Shimida | |
 |
Tôru Takatsuka | ... | Masao Nakaya |
|
|
Carl Craig | ... | Jim Crane (as Carl Craig Junior) |
|
|
Michiko Yaegaki | ... | Mariko |
|
|
Mari Atsumi | ... | Junko Aoki |
|
|
Junko Yashiro | ... | Masako Shibata |
|
|
Peter Williams | ... | Dr. Dobie |
| Kôji Fujiyama | ... | Commander of Self Defense Force | |
|
|
Yoshirô Kitahara | ... | Masao's Father |
|
|
Munehiko Takada | ... | Jim's Father |
|
|
Mary Morris | ... | Mrs. Crane (as Mary Murrows) |
|
|
Chikara Hashimoto | ... | Doctor A |
|
|
Kenji Gô | ... | Doctor B |
|
|
Shô Natsuki | ... | Doctor C |
|
|
Ken Nakahara | ... | Doctor D |
|
|
Kenichiro Yamane | ... | Doctor E |
|
|
Genzô Wakayama | ... | Boss Voice |
| Rest of cast listed alphabetically: | |||
|
|
Keiichi Noda | ... | Alien (as Kei'ichi Noda) |
|
|
Corinne Orr | ... | (voice) |
|
|
Teruo Aragaki | ... | Gamera (uncredited) |
Produced by
| Hidemasa Nagata | ... | producer |
| Masaichi Nagata | ... | executive producer |
Music by
| Kenjirô Hirose | ... | (as Kenjiro Hirose) |
Cinematography by
| Akira Kitazaki | ||
Editing by
| Shôji Sekiguchi | ... | (as Shoji Sekiguchi) |
Production Design by
| Tomohisa Yano | ||
Production Management
| Salvatore Billitteri | ... | post-production supervisor |
Sound Department
| Kimio Tobita | ... | supervising sound editor |
Special Effects by
| Kazufumi Fujii | ... | special effects |
| Yuzo Kaneko | ... | special effects |
| Keizô Murase | ... | special effects |
| Tôru Suzuki | ... | special effects assistant |
| Noriaki Yuasa | ... | director of special effects |
Editorial Department
| Eli Haviv | ... | post-production editor: AIP-TV release |
| Emil Haviv | ... | post-production editor |
Additional Crew
| Samuel Z. Arkoff | ... | presenter (AIP-TV release) |
| Bret Morrison | ... | re-release director (AIP-TV release) |
| Masaichi Nagata | ... | presenter |
| James H. Nicholson | ... | presenter (AIP-TV release) |
| Takayama Ryôsaku | ... | monster design |
