In the previous Fantastic Beasts movies, it was revealed that Credence Barebone (played by Ezra Miller) was actually born as Aurelius Dumbledore, brother to Albus and Aberforth.
Will Ezra Miller be in The Flash 2022?
No, Dylan O’Brien is NOT replacing Ezra Miller in THE FLASH. The movie wrapped more than 5 months ago. It is also worth noting that THE FLASH finished shooting months ago, and Ezra Miller plays multiple versions of Barry Allen. Replacing them would effectively mean reshooting the entire film.