Keaton has previously said he was convinced to sign up for The Flash by director Andy Muschietti’s vision and screenwriter Christina Hodson’s script.
And he wanted to see if he could pull it off. He told The Hollywood Reporter in 2021, “Frankly, in the back of my head, I always thought, ‘I bet I could go back and nail that motherf*****.”
He said it took some explaining for him to understand The Flash’s parallel universes but that when he went back, he understood the character “on a whole other level now”.
“I totally respect it,” he said. “I respect what people are trying to make. I never looked at it like, ‘Oh, this is just a silly thing’. It was not a silly thing when I did Batman. But it has become a giant thing, culturally.
“It’s iconic. So I have even more respect for it because what do I know? This is a big deal in the world to people. You’ve got to honour that and be respectful of that. Even I go, ‘Jesus, this is huge’.
Val Kilmer took over the role of Batman in Joel Schumacher’s 1995 sequel Batman Forever after Keaton didn’t like the script.
Before you see Keaton’s Batman midway through The Flash trailer, you’ll recognise Keaton’s voice, as the originally unseen character poses an important question to Barry Allen/The Flash.
He said, “Tell me something, you can go anywhere, another timeline, another universe so why do you want to stay and fight to save this one?” To which Allen answered, “Because this is the one where my mum lives, I’m not going to lose her again.”
The lines set up the emotional stakes of The Flash movie, and could potentially be the thing that grounds it in a high concept film that is aiming to fit in a lot of plot and characters in a story about time-travelling and universe-jumping.
In the trailer, Affleck’s Batman warns Barry, “If you were to go into the past, you have no idea what the consequences would be”.
Barry’s reply of, “Bruce, I can fix things” doesn’t inspire much confidence in the billionaire superhero who shoots back, “You can also destroy everything.”
By the end of the trailer, it’s looking grim when Barry says, “This can’t be happening, I completely broke the universe.”
There was also a glimpse of a super-powered Kryptonian, but it wasn’t Superman – “That wasn’t Clark”, Barry so helpfully pointed out – but Supergirl, also known as Kara Zor-El.
Henry Cavill and Gal Gadot had both reportedly filmed cameos for the film but were ultimately cut after it was decided by the recently installed studio team that planned sequels for their versions of Superman and Wonder Woman would not be moving forward.
James Gunn, now co-chief executive of DC Studios, earlier this month unveiled the next slate of DC movies and TV shows under his tenure. In the same announcement, he said The Flash would “reset the entire DC universe”.
The Flash was filmed in mid-2021 but was delayed due to a backlog in visual effects work. Warner Bros also had to contend with the mounting controversy around lead Ezra Miller who had several run-ins with police and was arrested for felony burglary, disorderly conduct and assault across two US states.
Miller, who identifies as non-binary and uses the pronouns they and them, released a statement in August which said they were going through a “time of intense crisis” and was “suffering complex mental health issues”.
Miller said they had started ongoing treatment.
The Flash is in NZ cinemas on June 15