Mads Mikkelsen

“We touch upon it in this film. It does seem as if they started out as very, very talented wizards who united at a young age because they knew that they were more talented than anyone else. I also have a line in the film, I will be paraphrasing it, but Grindelwald does say to Dumbledore, that, ‘It was you who said that we could reshape the world.’ And that has probably been a dream, a mutual dream within the two of them to reshape the world. And then, down the line, something happened, and their paths split, probably because the means of reshaping the world were quite different from Dumbledore and Grindelwald.”

Source: Bearpost