"It will be so interesting to see another side of Nagini", Kim tells EW.
Nagini's inclusion provides a strong link between the Fantastic Beasts saga the original Harry Potter series, where no real indication was ever given that Voldemort's favorite pet was ever anything other than an unusually large green snake.
The sequel to 2016's Fantastic Beasts and Where to Find Them, The Crimes of Grindelwald once again follows naturalist Newt Scamander as played by Eddie Redmayne, but it will be hard for even the franchise's central character to not be overshadowed by both the villain and the returning presence of the beloved Albus Dumbledore.
However, in the preview that debuted Tuesday, there is a sequence in which Credence (Ezra Miller) whispers the name "Nagini" before Kim's character transforms into a snake inside what appears to be a circus cage. And you know things are about to go down in the most deliciously risky fashion if the finest wizard to have ever lived hints that your life is in danger.
She added: "She wants to stay a human being and I think that's a wonderful contrast to the character".
The final trailer of Eddie Redmayne, Jude Law and Johnny Depp starrer Fantastic Beasts: The Crimes of Grindelwald is here and it looks every bit as magical and epic as one would have hoped. But, making good on his threat, Grindelwald escaped custody and has set about gathering followers, most unsuspecting of his true agenda: to raise pure-blood wizards up to rule over all non-magical beings. Lines are drawn as love and loyalty are tested in an increasingly divided wizarding world.
That's a hell of a weird connection to throw in there, Fantastic Beasts.