The film was born out of a tome which originally appears as a textbook in the early Harry Potter books. It recurred a couple of times in the first few novels before emerging as its own book in 2001 written by the fictional Newt Scamander about the creatures he has seen through his many travels.
That means Scamander himself has been in author J.K. Rowling's head for almost two decades, which was certainly a help when it came to sitting down to pen the script for the all new film which featured a younger version of the character as played by Oscar winner Eddie Redmayne.
Here's Rowling and Redmayne on Newt.
It's a little light on detail but it's interesting to hear how the character will evolve even during this initial film. Fantastic Beasts is being set up as a trilogy so we're going to assume he's a major player throughout - and we can't imagine where he'll be by the end of the journey.
Fantastic Beasts and Where to Find Them is in Irish cinemas on the 18th of November, 2016.