A new trailer for Fantastic Beasts: The Secrets of Dumbledore shows that the spinoff series will repeat the titular Hogwarts principal's mistakes from the original Harry Potter franchise. In the new Fantastic Beasts 3 trailer from Warner Bros., Jacob Kowalski (Dan Fogler) can be seen following the Scamander brothers on a quest to defeat Gellert Grindelwald (Mads Mikkelsen) as suggested by Albus Dumbledore (Jude Law), despite the fact that the character is a muggle.
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