MCU Star Josh Brolin Says Thanos’ Genocidal Plan in ‘Avengers: Infinity War’ ‘Is Not Necessarily Wrong’

Few Marvel villains have generated as much genuine debate as Thanos, the purple-skinned warlord whose plan to erase half of all life across the universe somehow struck a chord with audiences instead of pure revulsion. Years after ‘Avengers: Endgame‘ seemingly closed the book on the character, the actor behind him is still finding new ways to reignite that conversation.

Josh Brolin, who played Thanos across both ‘Avengers: Infinity War’ and ‘Avengers: Endgame’, has spent the past several years mostly staying quiet on where the character might fit into Marvel’s future. That changed recently while he was making the promotional rounds for an entirely different project, one with an eerily similar premise about mass death and survival.

Brolin sat down with Collider to talk about ‘The Dog Stars’, his upcoming film with Ridley Scott, when the conversation veered toward whether Thanos could ever return to the MCU. Rather than shutting the idea down, Brolin gave a noncommittal response before pivoting into a much more pointed reflection on the villain’s actual worldview.

“I really think the real world has gone off the rails, and I’m beginning to wonder if he was right,” Brolin said, before laying out his reasoning in full. “And then what did Thanos do? He got rid of half the universe in order to save the other half. That was the justification — which is not necessarily wrong,” he told Collider, tying the idea directly to how humanity has treated the planet.

That comparison wasn’t random. ‘The Dog Stars’ follows a small group of survivors navigating a world devastated by a deadly virus, with Brolin playing a hardened defender named Bangley opposite Jacob Elordi’s Hig. The film’s bleak, post-collapse setting gave Brolin an obvious real-world hook for revisiting Thanos’ logic, even if he stopped short of actually endorsing genocide as a solution.

Thanos’ rationale has always occupied a strange space in blockbuster villainy, presented as coherent enough that entire online communities formed around the idea that his math, however monstrous in execution, wasn’t entirely irrational. Brolin’s comments only add fuel to that ongoing debate, especially with Marvel now deep into its next phase of Avengers films.

It’s also not the first time Brolin has signaled he isn’t finished with the role. In an earlier conversation on the Happy Sad Confused podcast, he made clear he’d jump back into the part without hesitation if directors Anthony and Joe Russo came calling, saying he’d be on a plane to London by the next day. That kind of openness has kept speculation alive, even though Thanos was definitively killed off when Tony Stark used the Infinity Stones against him at the end of ‘Endgame’.

With ‘Avengers: Doomsday’ now in production under the Russos, and Marvel increasingly leaning into multiverse storytelling that makes death far less permanent than it used to be, Brolin’s comments are likely to keep fueling fan theories regardless of whether Thanos ever actually reappears. For now, his reflections say less about the character’s future and more about how unsettlingly relevant his motivations have started to feel.

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