Los Angeles - Ezra Miller will make a brief appearance in Batman V Superman: Dawn of Justice as The Flash.
The 23-year-old actor will portray the superhero - who is also known as Barry Allen and is the fastest man alive - in the forthcoming Justice League movie, but it has now been confirmed fans will catch a "glimpse" of him before that project hits the big screen in 2017.
Costume designer Michael Wilkinson - who has worked on Batman V Superman: Dawn of Justice and will work on Justice League - let the news slip in an interview with Omelette, where he confirmed: "I'm not really at the liberty to talk about The Flash right now, but it's something that you'll be seeing in the future in our films. You do get a glimpse of him, of course, in Batman v Superman.
"But I'm really looking forward to taking the amazing, iconic costume for The Flash and interpreting it in a fresh way where Ezra Miller is playing The Flash."
The American Hustle stylist has tipped Ezra - who recently starred alongside comedienne Amy Schumer in The Trainwreck - to be "great" for the role because he will add "youth and humour".
He added: "He's an extraordinary performer, he has a sort of interesting sense of humour and the youth that will be great for Barry Allen and I think he's going to make a great Flash."
Batman V Superman: Dawn of Justice - which is directed by Zack Snyder - also stars Henry Cavill as Superman, Ben Affleck as Batman, Gal Gadot as Wonder Woman, Jesse Eisenberg as Lex Luthor, and Amy Adams as Lois Lane.
It is scheduled for release in March 2016.
Watch the trailer here: