Invasion of the Neptune Men poster
Where to stream

Invasion of the Neptune Men

3.119611h 14mMovieScience FictionActionAdventure

Astronomer Shinichi Tachibana has a secret identity as the superhero "Iron Sharp" and is well beloved by children. When they are attacked by a group of metallic aliens, Iron Sharp drives the aliens away. The resourceful Tachibana helps…

DirectorKoji Ota
WriterShin Morita

Where to watch

Not available in India
Streaming in 4 other countries

Invasion of the Neptune Men isn't on any streaming service in India right now, but it's available in Canada, Japan, Mexico, United States. Streaming rights are licensed per country.

Cast · Directed by Koji Ota

SCSonny Chiba
Sonny Chiba
Tachibana - Scientist / Space Chief
SEShinjirō Ehara
Shinjirō Ehara
RMRyuko Mizukami
Ryuko Mizukami
Tanigawa Yoko
MKMitsue Komiya
Mitsue Komiya
SKSeiichirō Kameishi
Seiichirō Kameishi
SO
Shiro Okamoto
RYRinichi Yamamoto
Rinichi Yamamoto
KM
Kappei Matsumoto
Tanigawa Hiroshi
TKTakashi Kanda
Takashi Kanda
KSKen Sudo
Ken Sudo
JM
Junji Masuda
KS
Koji Sahara
Garrison Chief Mikami

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More from Shinjirō Ehara · Co-star actor

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Invasion of the Neptune Men — streaming FAQ

Which OTT platform streams Invasion of the Neptune Men?

Invasion of the Neptune Men isn't on any streaming service in India yet, but it's available in Canada, Japan and Mexico and other countries. Streaming rights differ by country — switch your country in the header to see where.

Is Invasion of the Neptune Men on Netflix?

No, Invasion of the Neptune Men is not on Netflix in India as of September 2026.

Is Invasion of the Neptune Men on Amazon Prime Video?

No, Invasion of the Neptune Men isn't on Amazon Prime Video in India right now.

Where can I watch Invasion of the Neptune Men for free?

Invasion of the Neptune Men isn't streaming in India yet, so there's no way to watch it free at the moment.