Attracted by the report of the development of a new type of rocket fuel, the vicious dictator of Krangkor, the dark planet, descends on Earth to steal the formula from its creator, the benevolent Dr. Makin.
| Actor | Role |
|---|---|
 Tatsuo UmemiyaPrince of Space / Wally | Prince of Space / Wally |
 Ushio AkashiDr. Macken | Dr. Macken |
 Joji OkaAmbassador Dictator Phantom | Ambassador Dictator Phantom |
| HHiroko MineSusie | Susie |
 Ken SudoMukai | Mukai |
 Takashi KandaInspector Takeda | Inspector Takeda |
| JJunji MasudaColonel Watanabe | Colonel Watanabe |
 Takeshi HasebeMr. Tannen | Mr. Tannen |
 Akira KatayamaDoctor Naitô | Doctor Naitô |
 Akikane SawaCommander Kôda | Commander Kôda |
| TTokio KozukaTsunoda | Tsunoda |
 Osman YusufDr. Cohen (uncredited) | Dr. Cohen (uncredited) |