Today, we discovered that another character from the Harry Potter adventures will be appearing in the new Fantastic Beasts: The Crimes of Grindelwald film – but not quite in the same way.

In the new trailer, released today, it was revealed that the character played by Claudia Kim has a name familiar to us... Nagini.

Harry Potter fans know this name all too well: Lord Voldemort’s deadly snake companion responsible for many terrifying moments.

Before now, Claudia Kim’s character had only been known as ‘the Maledictus’. A ‘Maledictus’ is a carrier of a blood curse which will ultimately destine them to transform permanently into a beast.

It transpires that Nagini the snake, from Harry Potter, used to be a woman with a terrible curse. And seemingly, based on her friendship with Credence as seen in the trailer, not just the evil character who did Lord Voldemort’s bidding. So, what happened?

While we ponder on Nagini’s past, here’s a reminder of everything we know about Nagini from the Harry Potter books – and her connection to Lord Voldemort.

And while we do that, be sure to check out an exclusive interview with the actress portraying Nagini, Claudia Kim, on Entertainment Weekly.