Now that “Avengers: Endgame” is out, stars are letting some spoilers loose on social media. If you don’t want to know about the epic final battle, turn away now.

Avengers Endgame set video
"Avengers: Endgame" stars are starting to share behind-the-scenes content. Marvel Studios

In the film’s last battle sequence, all the heroes of the Marvel Cinematic Universe unite to fight Thanos (Josh Brolin). There are dozens of heroes on screen, including a few who didn’t even make it into last year’s “Infinity War.” Star-Lord actor Chris Pratt couldn’t resist taking a behind-the-scenes video as they prepared to film the fight.

The clip includes Dave Bautista (Drax), doubles for Karen Gillan and Zoe Saldana (Nebula and Gamora), Elizabeth Olsen (Scarlet Witch), Chris Evans (Captain America), Chris Hemsworth (Thor), Sebastian Stan (Winter Soldier), Jeremy Renner (Hawkeye), Paul Rudd (Ant-Man), Chadwick Boseman (Black Panther), Pom Klementieff (Mantis), Tom Holland (Spider-Man), Danai Gurira (Okoye), Robert Downey Jr. (Iron Man), Benedict Cumberbatch (Doctor Strange) as well as directors Joe and Anthony Russo.

“I’m pretty sure I’m the most famous person here,” Sean Gunn deadpans. The actor is not seen in “Endgame” as Kraglin, but he is also Rocket Raccoon’s stand-in.

“This is a really illegal video,” Pratt says while smiling.

“Big trouble,” Evans laughs.

Pratt shared the video early Monday morning after it became clear that quite a few people went to see the movie on opening weekend. The film made over $1.2 billion by Sunday, becoming the fastest movie to ever hit the billion-dollar mark.

“No rule was going to stop me from seizing this once in a lifetime opportunity to capture this collection of stars, a group that likely will never be in the same room again,” Pratt wrote in the caption.

It sounds like more behind-the-scenes videos are coming. Evans took to Twitter to add that he has a few clips to share as well. Fans will have to stay tuned to see what the actor got on camera.

Marvel Studios’ “Avengers: Endgame” is in theaters now.