He joined Instagram just to make the announcement

Well, Jake Gyllenhaal has just joined Instagram to make his big baddie reveal.

In his first ever post, he can be seen reading 'The Amazing Spider-Man' comic book. The title of this issue in particular is 'The Return of the Man Called Mysterio!' and Jake suddenly realises his role in the next Sony/Marvel collaboration. He captioned the post, "I just realised I'm not playing Spider-Man."

This is the first time that anyone from the upcoming movie has made reference to Mysterio being the big bad of Peter Parker's next adventure.

In 'Spider-Man: Far From Home,' we are set to see Mysterio make his first big screen debut. Quite an odd villain, Mysterio relies on more of a smoke and mirrors approach in trying to defeat his spider-nemesis. Created by the late Stan Lee and Steve Ditko, the villain is a special-effects wizard, if you will. Quentin Beck is a Hollywood special-effects artist and stunt man who decides that he wants to put his heart into being a super-villain instead.

Mysterio as he is portrayed in the 'Spider-Man' comic books

Since filming began on 'Spiderman: Far From Home' earlier this year, everyone involved has remained very tight-lipped on the project.

Due to take place following the events of 'Avengers 4' after it releases next May, the movie will see Spider-Man and his friends go on a holiday to Europe where they meet the fishbowl-wearing villain. A video from set was leaked perviously, although we haven't had a proper look at Mysterio's costume as of yet.

'Spider-Man: Far From Home' releases in July 2019, so we should expect a teaser trailer very soon. Tom Holland, Zendaya, and Michael Keaton are all expected to reprise their roles in the sequel.