WARNING: The following article contains spoilers for Fantastic Beasts: The Crimes of Grindelwald, in theaters now.
Of all the twists and turns revealed over the course of Fantastic Beasts: the Crimes of Grindelwald, the most earth-shattering revelation is that Credence Barebone is, in actuality, Aurelius Dumbledore. A long-lost relative of future Hogwarts headmaster Albus Dumbledore, the film's final twist is punctuated with a phoenix arriving to join Credence, seemingly confirming Grindelwald's claim that the mythical bird appears whenever a Dumbledore family member is at their greatest moment of need.
Aurelius is a previously unmentioned member of Dumbledore's family; earlier novels and comments by series creator J.K. Rowling included younger siblings Ariana and Aberforth, with Ariana killed in the crossfire sparked by a duel between Albus, Aberforth and Grindelwald decades before the events of Fantastic Beasts and Where to Find Them. Credence's true identity as a long-lost Dumbledore, as well as him becoming Grindelwald's latest protege, means Aurelius will be a powerful, personal opponent as the prequel series continues to unfold over its next three planned films.
But in terms of its implications for the wider Wizarding World, the revelation shines a light on the often private, unseen life of Albus Dumbledore. While mentoring Harry Potter during his tenure at Hogwarts, precious little information about Dumbledore's personal background is revealed until the series' final installment, Harry Potter and the Deathly Hallows. The Crimes of Grindelwald's final twist virtually guarantees that future sequels will delve deeper into Dumbledore's family history to ascertain how exactly Aurelius is related to Albus. While conventional wisdom would place Aurelius as a brother to the Hogwarts professor, this connection may not be as clear-cut as it initially appears.
The reveal that Credence is actually Aurelius Dumbledore comes after a revelation from Leta Lestrange that she had swapped babies in transit to America with her own half-brother to avoid her brother's incessant crying. Soon thereafter, the ship carrying them mysteriously sank, with Leta saving Aurelius while her half-brother presumably drowned with Aurelius' mother.
NEXT PAGE: Dumbledore's Family Tree Gets... Complicated