We don't even know what it's gonna be yet: Mark Ruffalo on 'Avengers 4' ending

Mark Ruffalo has said the climax of Avengers 4 remains undecided as of now. The 50-year-old actor, who plays Bruce Banner/ the Hulk in the Marvel Cinematic Universe, revealed the team is yet to finish the principal shoot of the Infinity War follow-up.

"We don't even know what it's gonna be yet. We're not just doing reshoots. We're going to finish the movie, which we really didn't get to finish totally when we left it last year," Ruffalo said on The Marvelists podcast.

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He hinted director duo - Anthony and Joe Russo - is yet to zero in on how Avengers 4 will end.

"I don't even know that (the Russos) really know exactly. Some of it is happening while we're there. It's pretty amazing. And we'll shoot some stuff and a few days later come back and reshoot it 'cause we wanna take it in another direction.

"It (the film) is a very living organism; even as we approach it being a locked picture, we're still working on it," Ruffalo said.

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Avengers 4 is set to be released next year.