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Luthor and the Secret Society refit their headquarters and fly into deep space in a last-ditch attempt to reanimate Brainiac. En route, Tala frees Grodd, who leads a mutiny of other disaffected villains against Luthor and his supporters. Luthor uses his intellect and resourcefulness to counter his various adversaries' powers; Grodd's mind-control ability is used against him, forcing him to step into an airlock, from which he is released into the void. Luthor uses Tala's magic in an attempt to reconstitute Brainiac, but instead resurrects Darkseid (with Brainiac enhancements), who makes clear his plans to lay waste to Earth before destroying the Secret Society's headquarters. Darkseid returns to Apokolips just in time to stop a war between the two factions of his Elite fighting for power, and reveals to them his plans of massive invasion. Luthor and the surviving Secret Society members turn to the Justice League for help.

How to Watch Justice League Unlimited Season 3 Episode 12 Legally and Safely

If you want to stream Justice League Unlimited Season 3 Episode 12 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 Justice League Unlimited Season 3 Episode 12 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.