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Transformers: The Headmasters: The Destrons manage to put Soundwave back together after his struggle with Blaster and rename him Soundblaster. Back on Earth, Sixshot sends Dinosaurer heading toward an energy plant in his battle station mode, but Metroplex moves in to intercept him. They battle when a strange creature suddenly appears from out of the ground and incapacitates Metroplex with a blast. Ultra Magnus reports this to Rodimus Convoy back on Seibertron and he prepares to send out the Cyberton Cassettes, still upset about Blaster's destruction, to figure out what's the matter. Rodimus Prime announces that the Cybertrons have been working on repairing Blaster, who is reborn as Twincast. With the reunion over, Twincast and the Cybertron Cassettes head to Earth. As Superion and the Cybertron Triple Changers battle Bruticus and the Destron Triple Changers, Twincast and the Cybertron Cassettes sneak into Dinosaurer and defeat the Destron Cassettes. The Destron Headmasters take the creature with them to Seiertron and they attack the Cybertron Headmasters, while the creature incapacitates the Throttlebots. Twincast figures out the secret behind the creature and sneaks aboard the spacebridge to head to Seibertron to stop Soundblaster, who is controlling the creature. He manages to accomplish this by blasting a control tape out of Soundblaster, then the Cybertron Headmasters destroy the creature and win.

How to Watch Transformers: The Headmasters Season 1 Episode 4 Legally and Safely

If you want to stream Transformers: The Headmasters Season 1 Episode 4 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 Transformers: The Headmasters Season 1 Episode 4 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.