"I think I would have been disappointed being dubbed by another actor, but Alan is so unique, his voice is so unique. Nobody has a voice quite like Alan's, and I'm friends with him anyway from working on Harry Potter. When he was asked to do it he checked with me. 'Is this cool? Do you mind if I do this?' I said, 'No, no, it's great. I feel kind of honored that you're collaborating with me and that we're bringing this character to the screen together.'"