While speaking for casting of the character Albus Dumbledore in the sequel for 'Fantastic Beasts and Where to Find them' Harry Potter Author J.K. Rowling revealed this week that she already has an actor in mind. At a red carpet premiere for 'Fantastic Beasts' in New York on Thursday, Rowling said, "I have, of course, thought about this. I do have a name. I do have someone in mind, but I can't say it.