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After exposure to radiation, an atomic research scientist finds himself changing into a murderous, lizard-like creature every time he is exposed to sunlight.

How to Watch The Hideous Sun Demon Legally and Safely

If you want to stream The Hideous Sun Demon through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry The Hideous Sun Demon films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.