| CAST | CONNECTIONS | |
|---|---|---|
| Sonny Chiba | Tachibana - Scientist (as Shinichi... | |
| Mitsue Komiya | Saito - Scientist | |
| Seiichirô Kameishi | Yamagata Yukichi | |
| Rin'ichi Yamamoto | (no title) | |
| Kappei Matsumoto | Tanigawa Hiroshi | |
| Takashi Kanda | Defence Chief Takita | » [816] PRINCE OF SPACE |
| Junji Masuda | Tamiya Hiroshi | |
| Hidemichi Ishikawa | Yoshimoto Hiroshi | |
| Shinjiro Ebara | Yanigada - Scientist | |
| Harold Conway | Washington Broadcast Station... | |
| Genji Kawai | Morie | |
| Masazumi Okabe | Railway worker | |
| Kôsaku Okano | Reporter | |
| Koji Sahara | Garrison Chief Mikami | |
| Shôken Sawa | Land Commander Inukai | |
| Kôji Sawada | Cosmos Man | |
| Kôji Sekiyama | Karimasu | |
| Ken Sudoh | Staff Chief Miyake | » [816] PRINCE OF SPACE |
| Robby the Robot | Toy (uncredited) | |
| Ryuko Mizukami | Tanigawa Yoko | |