Movies

Justin Bieber as Robin?!

Justin Bieber as Batman’s little chum?

Bat-fans, who are already furious at the notion of Ben Affleck as their beloved Dark Knight, got another shock when pop star Bieber suggested he might join Affleck in the upcoming flick “Batman vs. Superman.”

His role? Robin the sidekick.

On Sunday, Twitter was abuzz over the prospect.

Ben Affleck has been cast as Batman in “Batman vs. Superman.”

A few Bieber fans wished the 19-year-old crooner the best. But the sentiment was overwhelmingly against the idea of Bieber as the Boy Wonder, at least online.

“God, please let it be a hoax!” tweeted @KoderKev, offering what was a recurring theme.

“Hopefully he’s kidding,” tweeted @allinson smith.

As Twitterer @JRheiling wrote, “The only things that can defeat Superman are kryptonite, magic, and putting Ben Affleck and Justin Bieber in his movie.”

Bieber’s a huge Batman fan — his father even bought him a customized Batbike for his 19th birthday.

On Friday, he posted an Instagram photo of what appeared to be a copy of the movie’s screenplay and added “#Robin” as the hashtag.

The cover paper even had a “Bieber’’ watermark on it, suggesting it was his personal copy. But was he fooling?

Hours earlier, he tweeted that he was “Off to do something funny . . . or die :).”

Actor Burt Ward played Robin in the campy 1960s “Batman” television series that starred Adam West.

Burt Ward played Robin in the 1960s “Batman” TV series.Everett Collection

Chris O’Donnell played a more serious Robin and alter-ego Dick Grayson in the ’90s installments of the movie franchise. And in last year’s “The Dark Knight Rises,” it was hinted that Joseph Gordon-Levitt may assume the role.

The new much-anticipated superhero flick — director Zack Snyder’s sequel to “Man of Steel” — is set to hit the big screen in July 2015.