With the “Avengers 4” trailer expected to drop soon, fans are gearing up for the big title reveal that they’ve been speculating about for months.

Marvel Studios decided to withhold the official title to prevent spoilers and keep the focus on “Infinity War.” However, they are expected to finally unveil the big secret when the trailer debuts (which fans assume will be sometime in the coming months, based on the “Avengers: Infinity War” trailer release). Let’s take a look at some of the most popular title theories so far:

“Avengers: End Game” was brought up after directors Joe and Anthony Russo posted a photo to social media with the caption “Look hard.” Some fans believe the words “End Game” can be seen in the picture. Was it intentional or were the directors referring to something else?

The evidence against this title, however, is that the title of “Avengers 4” supposedly wasn’t spoken in “Avengers: Infinity War.” Doctor Strange (Benedict Cumberbatch) used the term “end game” in the film.

“Avengers: Eternity” came up after the Russos told ComicBook.com that “Avengers: Forever” wasn’t the title, but it was a very close guess.

“Avengers: Aftermath” is another title that popped up after the Russos made a post on social media. They posted a photo from a piece of art titled “Infinity Mirrored Room: Aftermath of Obliteration of Eternity.” Fans immediately started speculating that this was a hint at the title. The directors then deleted their post, prompting even more rumors that their followers may have guessed correctly.

“Avengers Assemble” is also a popular choice. The tag line has never been said aloud in the movies (though the end of “Age of Ultron” hinted at it), and it seems like our heroes will have to unite to defeat Thanos. This would, however, be confusing since the first “Avengers” was titled “Avengers Assemble” in some overseas markets.

“Avengers: Infinity Gauntlet” has been one of the biggest guesses since it’s another comic book arc that followed Thanos and his use of the Infinity Stones. However, the Russos have nixed the idea along with any idea derived from comic book titles.

“I don’t think there are any comics that correlate to it,” Joe told ComicBook.com. “I think we’re in pretty fresh territory with ‘Avengers 4.’ If anything, I think it’s interesting after to go back and look at some of the Marvel films and view them through a different lens. But I can’t think of any comics in particular that would have value.”

Avengers 4 title Fans have been trying to piece together clues in hopes of learning the "Avengers 4" title for months. Photo: Marvel Studios

“Avengers: Annihilation” is the latest title to top everyone’s lists. Of course, “Annihilation” was a 2006 comic book arc, but it wouldn’t be surprising if the Russos were just trying to keep fans from guessing the title. MCU Cosmic claims to have several sources confirming the news, but fans will have to wait and see if Marvel Studios is actually using this title.

So when will the “Avengers 4” title be confirmed? Fans are assuming that it will be unveiled in the new trailer, which Marvel boss Kevin Feige reportedly said will come out before the end of the year.

It will definitely be revealed before “Avengers 4” hits theaters on May 3, 2019.