Fantastic Beasts: The Crimes of Grindelwald positions itself as being out to answer the big question left hanging after the first Fantastic Beasts movie: Who, really, is Credence Barebone? If you’ve seen the movie, you know the audience definitively does get that answer, but not in the way likely anyone expected.
Spoilers for Fantastic Beasts: The Crimes of Grindelwald continue below.
The final scene of the movie has Grindelwald reveal the surprising truth to Credence about his true heritage: He’s a Dumbledore — Aurelius Dumbledore, to be exact, and the brother of Albus Dumbledore. Grindelwald even has a phoenix to prove that this is Credence’s true lineage. A phoenix, he tells Credence, always appears to a Dumbledore in their time of need. If you’re anything like me, your first question after this twist was a big ol’ “HOW?” We’ll do our best to puzzle it out.
Source: IGN.com Fantastic Beasts: The Crimes of Grindelwald Ending Explained