This November, J.K. Rowling's Fantastic Beasts sequel The Crimes of Grindelwald is unleashed in Cineworld – and tickets are now available to book. It's the next stage of magiozoologist Newt Scamander's (Eddie Redmayne) journey to defeat evil wizard Gellert Grindelwald (Johnny Depp), and a bunch of new characters are being introduced.
These include young Albus Dumbledore played by Jude Law, and Leta Lestrange played by Zoe Kravitz. Another new character is Theseus Scamander – otherwise known as Newt's brother. But given he wasn't mentioned in Fantastic Beasts and Where to Find Them, what do we know about the mysterious Theseus...
He comes from a magical background
Theseus Scamander is a British wizard born in 1897 to the mysterious Mrs. Scamander, about whom we know very little. As per the Fantastic Beasts canon, all we do know is that she bred Hippogriffs (Buckbeak from Harry Potter and the Prisoner of Azkaban, if you're not clued up on your magical beasts) and had two sons, Theseus and Newton, a.k.a our hero Newt.
He's engaged to Newt's teenage love
One might assume that Theseus and Newt Scamander get on like two peas in a pod – they are brothers, after all. As you can see from the latest and final trailer, the pair aren't exactly friends, though.
A lot of the tension is down to the fact that Theseus is engaged to a girl that Newt loved. Newt met Leta Lestrange at Hogwarts and the pair bonded over their shared love of magical creatures, but they separated when Newt was expelled. Since then, Theseus and Leta met and became engaged.
The circumstances of said meeting will likely be explored in The Crimes of Grindelwald, providing us with a magical kind of love triangle.
He was a war hero
Not only do wizards have their own wars, like the ongoing one with Grindelwald (who wants to initiate conflict between wizards and muggles), but seeing as they live among muggles (humans), they deal with our wars too.
A famous rule made by Archer Evermonde, the British Minister for Magic during World War I, forbade wizards from helping in the conflict. However wizards and witches still provided aid in any way they could, including Newt and Theseus. Newt helped on the Eastern Front with dragons, as he told Jacob Kowalski (Dan Fogler) in the first film, although not much is known about Theseus' role.
On leaving the war, Theseus was praised as a 'war hero' for defying Evermonde's ruling, but there is a possibility something else occurred during that time…
He's an auror
Some of Rowling's most significant characters are aurors, including the grown-up Harry Potter (Daniel Radcliffe), Mad-Eye Moody (Brendan Gleeson) and Nymphadora Tonks (Natalia Tena). To these ranks we can now add Thesesus Scamander.
An auror is a witch or wizard who works for the wizarding authorities to hunt people linked with the dark arts, arresting those who pose a threat. In the UK they work for the Ministry of Magic and in America they work for the Magical Congress of the USA (MACUSA).
Tina Goldstein (Katherine Waterston) was a MACUSA auror prior to the events of Fantastic Beasts and Where To Find Them. She explains to Newt that she helped Obscurial Credence (Ezra Miller) by using her magic to attack his abusive mother, Mary Lou (Samantha Morton). However there were lots of muggles, or, to use the American term, No-Majs, present, and their minds had to be obliviated.
There will be plenty of opportunities to see how the approaches of the UK and the USA differ in relation to their aurors. The plot of the sequel sees multiple aurors on both sides of the Atlantic on the hunt for Gellert Grindelwald, setting the stage for a spectacular showdown.
He's rumoured to be very powerful
A certain rumour about Theseus is that he's very powerful (likewise, his fiancee Leta). He would appear to be the polar opposite to the introverted and sensitive Newt, which may further develop the sense of brotherly conflict.
Theseus is also known for being an expert apparater (travelling with magic), but at the end of the trailer, we see Newt casting an unexpected spell on his sibling, so perhaps he's a more accomplished magician than Theseus after all?
He's played by rising star Callum Turner
Theseus is portrayed by British model and actor Callum Turner, who you may recognise from BBC's War & Peace where he played Anatole Kuragin, and Assassin's Creed where he was Nathan opposite Michael Fassbender.
Turner is actually younger than Eddie Redmayne, but Theseus is Newt's older (and wiser?) brother. The Fantastic Beasts sequel features lots of new faces and Theseus appears poised to either tear Newt's life apart, or emerge as a valuable ally.
Click here to book your tickets for Fantastic Beasts: The Crimes of Grindelwald, opening in Cineworld on 16th November. And don't forget to check out our essential guide to the Fantastic Beasts universe.
Nadine Shambrook is a writer who blogs for Cineworld as part of our news team.