For 50 years, "Outer Man" has been a cultural icon in Japan, a superhero TV series as ingrained in the national psyche as Ultraman. Generations have grown up watching the heroic Outer Man defend Earth from the monstrous Sylvie Seijin. But the line between fiction and reality blurs when a giant alien, identical to Outer Man, descends upon Tokyo.
| Actor | Role |
|---|---|
 Shun ShioyaHaruo Adachi | Haruo Adachi |
 Yasuhisa FuruharaHideki Yoshino | Hideki Yoshino |
 Junki TozukaKoichi Moriwaki | Koichi Moriwaki |
 Takumi TsutsuiDr. Fukuyama | Dr. Fukuyama |
| GGen IchikawaStaff Officer Hayashi | Staff Officer Hayashi |
 Yuki IkushimaAkio Hara | Akio Hara |
 Eiichi KikuchiToru Idesugi | Toru Idesugi |
 Ryûki KitaokaInvestigator Imai | Investigator Imai |
 Ryu ManatsuChief of Staff Oshima | Chief of Staff Oshima |
| SShunichi OkitaShojiro Eda | Shojiro Eda |
 Kojiro TakahashiHiroshi Sato | Hiroshi Sato |
| SSanshiro WadaOuterman | Outerman |
| TTatsuya KanekoAlien Silvie | Alien Silvie |
| MMichiko MakinoNot listed | Not listed |
 Sayoko HagiwaraNot listed | Not listed |
 GeroTalba | Talba |
| NNanamiMiki Aono | Miki Aono |
| DDaniel Aguilar GutiérrezDaniel Wyndham | Daniel Wyndham |
 Ryôsuke FukudaHiroshi Aono | Hiroshi Aono |
| KKenshoo IkedaNot listed | Not listed |
| NNaohiro KimataNarrator | Narrator |
| BBintaro YamaguchiNot listed | Not listed |
| KKatsumi ShionoAnnouncer | Announcer |