Spider-Man: Far From Home Trailer Breakdown - 18 Things You Need To See
3. Mysterio Arrives
While Spider-Man is getting absolutely washed in his fight against Hydro-Man, help is on the way in the form of... Mysterio, played by Jake Gyllenhaal.
He arrives on the scene for a big hero moment where he takes on Hydro-Man, which puts a new spin on a character who is traditionally a Spider-Man villain. He's a special effects wizard who decides to put his talents to a life of crime, creating incredible illusions and becoming a master hypnotist among other abilities.
It's because of that, of course, that no one (audience-wise, not in-universe) is going to buy the idea he really is a good guy, and why it doesn't really matter if these villains are supposed to be the Elementals or not. They are, almost certainly, projections and illusions created by Mysterio so that he can appear to be a great hero.
That might be his only goal, hoping to achieve form and fortune through faux-heroics, or it might be part of some bigger, more nefarious plan, but whatever it is, it's one hell of a trick.