I've seen Fantastic Beasts and Where to Find Them but I can't recall if I assumed that Grindelwald had been using Polyjuice in order to take on Graves' appearance, a la Barty Crouch and Mad Eye Moody appearance, or if this was factually confirmed in the movie. Do we know it was definitely Polyjuice?

I want to know if Graves' could appear in the sequel so is he alive in order for the Polyjuice production to continue or is he likely murdered.


1 Answer 1


This is covered in detail over on Science Fiction & Fantasy in this answer.


Through an advanced spell

J.K. Rowling answered this question in the FAQ of her new website.

Why did ‘revelio’ undo the effects of Polyjuice Potion?

It didn’t. Grindelwald’s Transfiguration surpasses that of most wizards, so he used a spell, not a potion, to take on the appearance of Percival Graves.
J.K. Rowling's new website - FAQ

More information and older (obsolete) answer at the link above.

  • Thanks so much. I didn't know about JK's personal website off to snoop through its contents.
    – user76639
    Jan 20, 2017 at 7:23

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