Over 80 characters from the last decade of Marvel movies are set to appear in Avengers Infinity War and its untitled sequel, Avengers 4.

And with the latter being a conclusion to the first saga of the Marvel Cinematic Universe, it’s inevitable that we’re going to be saying goodbye to some of the superheroes.

But who will walk home to peace and harmony and who will be sacrificed in the war against the mad titan Thanos?

Now directors The Russo Brothers have revealed that they know who they are allowed to kill and who not too, because of where the MCU will head after Avengers 4.

Speaking with Vanity Fair, Anthony Russo said: “So we know who we’re allowed to kill, and that’s about it. 

“I don’t even think Marvel had any ideas about where they would go after [3 and 4]. It’s not an end for all of these characters; it’s an end for some of these characters. 

“So some of these characters will go on. So it’s more complicated, that’s why it’s not a clean ending.”

Following the release of Avengers Infinity War’s first trailer, fans who had seen the leaked Comic Con teaser pointed out there were shots missing in this week’s that could hint at some big deaths.

One scene saw Spider-Man apologising to Tony Stark, as though something horrible was about to happen, while another saw Thor having his head squeezed by Thanos’ giant purple mits.

Avengers Infinity War will be released in UK cinemas on April 27, 2018, while Avengers 4 will follow on April 26, 2019.