JK Rowling just mic dropped details about the new character of Professor Eulalie ‘Lally’ Hicks in up-and-coming film Fantastic Beasts: The Crimes of Grindelwald.

While fans have been treated to small insights into the second film in the Fantastic Beasts franchise, Rowling has remained tight-lipped about the character of ‘Lally’ – until now.

Played by actress Jessica Williams, Hicks teaches at Ilvermorny School of Witchcraft and Wizardry, the American equivalent of Hogwarts. However, we still don’t know what her specialist subject will be.

We’re not entirely in the dark, though: taking to Instagram, Rowling and Williams announced some highly anticipated details during the intermission of Harry Potter and the Cursed Child on Broadway.

Rowling then followed up with a tweet, telling fans that although they’ll see the character of Hicks in the next film, her “true glory” won’t shine until the third film in the franchise. 

“Professor Eulalie (Lally) Hicks of Ilvermorny School of Witchcraft and Wizardry with some random woman during the interval of #CursedChildNYC,” Rowling wrote. 

“You only see a HINT of Lally in Fantastic Beasts 2. Her true glory is revealed in FB3,” Rowling tweeted. 

Last year, Williams revealed she was a massive Harry Potter fan and never thought she’s be so lucky as to land a part in the film.

“Those movies and books, especially the books, were so important to me,” Williams told EW last year. 

“I could not have fathomed that when I was in the fourth grade reading these books, there would be a character I play that exists in this universe. It’s insane to me.”

But Rowling also took some time to troll Trump – adding to her endless triumphant Twitter takedowns. 

“Warning: there is a Boggart on the loose in Times Square,” Rowling tweeted, poking fun at President Trump. 

Here’s hoping Rowling reveals more details in the coming months. 

Fantastic Beasts: The Crimes of Grindelwald will hit cinemas across the UK on 16 November.

Images: Twitter / Getty