Avengers: Doomsday may revolve around a threat powerful enough to endanger all of humanity, but the mood behind the scenes was anything but grim. For fans, the film promises the long-awaited sight of their favorite heroes assembling once again, yet it appears the reunion meant just as much to the people making it. Anthony Mackie has now revealed that the set doubled as a catch-up spot for the entire cast.

From who got married to who became a father, the Earth's mightiest heroes had a lot to catch up on.

Marvel has spent years convincing audiences that Doom is the gravest threat the universe has ever faced, and the synopsis for Avengers: Doomsday only reinforces it, with heroes from three different worlds forced to unite just to put up a fight against him. There is little doubt that every day on the job should have been a punishing one for Earth’s Mightiest Heroes. According to one of the actors who plays them, though, the experience felt far closer to summer camp.

"It was like summer camp," Mackie told Entertainment Tonight.

Mackie reflected on Entertainment Tonight how it had been many years since the actors had spent time with each other, and the movie, despite its grim premise, served as a great get-together. But while Mackie recounts the filming as a fun summer camp, other Avengers: Doomsday actors have come out with quite a different experience.

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While Mackie may have gotten the chance to meet old friends, the consensus around Avengers: Doomsday has been that the filming is so shrouded in mystery that you would not know who you have filmed with. The case is best told by Alan Cumming and Florence Pugh's encounter.

Marvel’s reputation for spoiler paranoia is nothing new, but Avengers: Doomsday seems to have pushed it into a different realm. Tom Holland’s well-known habit of letting things slip during press tours appears to have taught the studio a lesson or two, because the secrecy around this film has been turned up by two hundred thousand notches. Scripts have been scarce, character names have reportedly been swapped for fake ones, and some actors have admitted they had no idea who else was on the call sheet.

During his interview on SiriusXM Hits 1, Alan Cumming revealed his first encounter with Florence Pugh at the Emmys despite having filmed with her.

"I saw Florence Pugh yesterday at the Emmy, and I said, 'Gosh it's so funny, I've never met you but you lay on top of me." Cumming said.

Whether it was summer camp for Mackie or a puzzle with missing pieces for Cumming, Avengers: Doomsday has clearly given its cast very different experiences on the same set. One thing is certain: Marvel’s secrecy has left even the actors with plenty of questions about what the final film holds. Fans will soon find out whether the mystery was worth it when Earth’s Mightiest Heroes assemble on the big screen.

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What do you think about Anthony Mackie's confession? Let us know in the comments.