“Guardians of the Galaxy” director James Gunn stood up for the Marvel Cinematic Universe after it faced criticism from veteran directors Martin Scorsese and Francis Ford Coppola.

Gunn defended the franchise in an Instagram post featuring two of the most beloved characters from his own films: Groot and Rocket Raccoon.

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“Many of our grandfathers thought all gangster movies were the same, often calling them “despicable,'” Gun captioned the photo in a nod to the work of Coppola and Scorsese, which includes “The Godfather” trilogy and “Goodfellas” respectively.

He added that the MCU was just cinema's latest evolution: "Superheroes are simply today's gangsters/cowboys/outer space adventurers.

"Some superhero films are awful, some are beautiful. Like westerns and gangster movies (and before that, just MOVIES), not everyone will be able to appreciate them, even some geniuses. And that's okay."

Gunn's comments were made after Scorsese said that Marvel films weren't cinema in an interview with Empire magazine (via ScreenRant). He instead compared the superhero movies to theme parks.

Speaking to journalists in Lyon after being awarded the Prix Lumiere for his contribution to cinema, Coppola threw his weight behind Scorsese's remarks, and went a step further.

"I don't know that anyone gets anything out of seeing the same movie over and over again," he said, according to AFP.

"Martin was kind when he said it's not cinema. He didn't say it's despicable, which I just say it is," he added.

Francis Ford Coppola

Foto: Francis Ford Coppola is not an "Avengers" fan.sourceJason Bahr/Getty Images

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Gunn wasn't the only one to defend comic book adaptations in light of their reprovals.

"Of course it's cinema! It's at the movies," "Thor: Ragnarok" director Taika Waititi told AP Entertainment.

Samuel L. Jackson was among the actors who have defended the movies, telling Variety: "I mean that's like saying Bugs Bunny ain't funny. Films are films. Everybody doesn't like [Scorsese's] stuff either.

"Everybody's got an opinion, so I mean it's okay.

"Ain't going to stop nobody from making movies."

With Marvel's "Avengers: Endgame" earning $2.79 billion globally, Jackson is probably right.

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