avengers
Actor Robert Downey Jr. poses before the German premiere of "The First Avenger: Civil War" (original title: Captain America: Civil War) in Berlin, Germany, April 21, 2016. Reuters/Fabrizio Bensch

There may be a good reason why the title of “Avengers 4” hasn’t been announced yet. It may reveal spoilers about the upcoming “Avengers: Infinity War,” the directors have confirmed.

When the Russo Brothers read a tweet saying that the title of the final Avengers movie may reveal something dark and scary, they confirmed that, yes, "it should" scare people (see below). This heightens heightened the possibility of major deaths in the next film.

Thanos (Josh Brolin) will finally be making his big appearance. He's supposed to be one of the biggest baddies in the Marvel Cinematic Universe.

Heroes from across the galaxy will come together to stop him. From those on Earth to the Guardians of the Galaxy, everyone will have the common goal of stopping Thanos from acquiring all the Infinity Stones, which he wants to accumulate to combine for the Infinity Gauntlet.

If Thanos gets all the Infinity Stones, he will have the ability to destroy half the galaxy with a snap of his fingers. Given the character’s obsession with death and destruction, this may be the first thing he will do. Will the loss in the next movie involve the death of superheroes, or will it spread across the galaxy, with billions of people and alien species losing their lives?

“Avengers: Infinity War” is set to be released on April 25 in Australia. The untitled “Avengers 4” movie is set to be released in 2019.