In "Harry Potter and The Deathly Hallows," Harry discovers Dumbledore and Grindelwald's complex history. These two wizards came to believe their power gave them the right to rule, and that they could accomplish their lofty goals through the Deathly Hallows. Tragically, things fell apart, and eventually came to a brutal crescendo when Grindelwald, Dumbledore, and Dumbledore's brother Aberforth dueled each other. When the smoke cleared, the Dumbledores' younger sister Ariana was dead.
The "Fantastic Beasts" franchise brings entirely new depth to Ariana's tragic tale. Attacked by a group of boys at a very young age, Ariana was traumatized to the point of becoming an Obscurial. An Obscurial (a concept introduced in the "Fantastic Beasts" films) is a witch or wizard whose magic has been suppressed, often through abuse. Turned inward, their powers grow uncontrollable and poisonous, eventually killing them. Watching this process eat Ariana alive was horrific, as Dumbledore recalls in "Fantastic Beasts: The Secrets of Dumbledore." Fans knew about Ariana's sad fate before this third film hit theaters, but they'd never seen it explored in such potent detail.
