Walk onto Avengers Campus at Disney’s California Adventure, and you never know who you might see. Iron Man could be posing for photos. Captain America and Black Panther could be watching from up high. And, a few times a day, Spider-Man will literally swing around before meeting his fans. And yet, even though they were introduced into the Marvel Cinematic Universe last year, the Fantastic Four had yet to appear in the park. Until now. Starting November 20,