​After the release of the final Fantastic Beasts: The Crimes of Grindelwald, fans are seriously astounded by the new character twist of a villain Harry Potter fans are all too familiar with. 

The trailer reveals that Claudia Kim's role as one of the “new” Fantastic Beasts characters, isn't actually so new at all. Kim plays Voldemort’s evil snake companion Nagini ​fr​om the Harry Potter s​e​ries and some are pretty angry.

​​​J.K. Rowling tweeted that she'd been sitting on the Nagini secret for "20 years," and while normally fans of a franchise this huge would be excited about something unseen and unpredictable happening, in this case, fans are finding the casting of a Korean woman as racist. 

A bit of background for anyone who may be unfamiliar with Nagini: the character first came to fruition in the Harry Potter and the Goblet of Fire film. Nagini is Voldemort’s giant pet snake that attacked Harry and killed Snape, who he used to "milk" for her poison. She meets her demise by being beheaded by Neville Longbottom.

In Fantastic Beasts, Nagini a human woman carrying a blood curse that transforms her into an animal. As seen in the trailer, at some point in the new movie, she's a shape-shifting circus performer. 

A lot of Twitter users are really stumped as to how anyone is finding Kim's casting OK. ​As Yahoo points out, Nagini is only the second significant Asian character in the entire Potterverse! We also already know that she ends up being a murderous pet snake of an evil wizard, which is extremely unsettling considering the reveal that she was once a woman. 

Additionally, casting Kim as Nagini feeds into some basic "Asian women in films" stereotypes, such as sinister, exotic “dragon lady” and submissive, voiceless sex object. Yikes.

Since all the backlash, Rowling has responded via Twitter, giving an explanation for Nagini being Asian. "The Naga are snake-like mythical creatures of Indonesian mythology," she wrote, adding that "Indonesia comprises a few hundred ethnic groups, including Javanese, Chinese and Betawi."

"Have a lovely day," she savagely ended her tweet. Well, it seems there's a perfectly good explanation for Kim's casting. Now, let's hope for more representation in the future films.