The next "Captain America" movie, "Captain America: Civil War", will be LOADED with Marvel superheroes. Close to ALL OF THEM, in fact.

We'll see Iron Man, Black Widow, Hawkeye, the Vision, the Winter Soldier, Falcon, War Machine, Scarlet Witch, Ant-Man . . . and even Spider-Man will supposedly make an appearance. But that hasn't been announced yet, because the new Spider-Man hasn't been cast.

So far, there's no word on Thor or the Hulk. But MARTIN FREEMAN from the "Hobbit" movies has joined the cast. There's no word who he's playing.

"Captain America: Civil War" comes out next May. It picks up where "Avengers: Age of Ultron" left off . . . in the aftermath of a second huge international incident involving the Avengers that led to massive collateral damage.

Now there's political pressure to install a governing body to determine when to enlist the help of the Avengers, and to hold them accountable for what they do.

This results in a split between the superheroes. One group led by Captain America is cool with it . . . while another led by Iron Man wants to go rogue. Overly-long and impossible-to-follow CGI fight scenes will ensue.