[Edaily Starin YUN GI BACK Reporter] They use fake names and even circulate fake scripts. Even the actors filming alongside them don’t know who’s actually appearing in the scene. On the set of “Avengers,” where the eyes of fans around the world are focused, there’s a special “Operation 007” in place to prevent spoilers.

“Avengers: Doomsday,” set to be released this December, is no exception. Chris Evans, who returns as Steve Rogers, revealed that the code name “Luke Cage” was used in place of his own name in the scripts and call sheets during filming. His return was kept so strictly under wraps that even when moving around the set, he was referred to as “Luke Cage is on the move.”
Even the actors were confused when reading the script. Alan Cumming, who plays Nightcrawler, confessed that the *Doomsday* script included fake names to conceal the returning actors, making it hard to tell who was who. Given that this is a major crossover film, the production team limited the disclosure of information regarding the actual returning actors and their roles—even to the cast members themselves.
Robert Downey Jr.’s casting as “Doctor Doom” was also top secret. Jeremy Renner revealed that even in the group chat with the original Avengers members, Downey Jr. never mentioned his return, so he only found out after the official announcement. Benedict Cumberbatch also said that he first learned of his casting during the 2024 Comic-Con livestream and immediately sent a message to Kevin Feige.
In contrast, Tom Holland—famous for being a “spoiler-prone figure”—had heard about the return from Robert Downey Jr. in advance. In an interview this year, Tom Holland confessed that as soon as he hung up the phone, he told Zendaya, “Downey’s coming back.” This was particularly amusing given his history of leaking Marvel information on several previous occasions.

This isn’t the first time Marvel has maintained such ironclad security. During the production of *Avengers: Infinity War*, the Russo brothers gave the actors scripts that included fake scenes and fake plot twists. Only a very small number of crew members actually read the full script, and Tom Holland wasn’t even given a proper, complete copy. Director Joe Russo has revealed that Tom Holland was given only his own lines and, at times, didn’t even know who he was acting opposite.
Security measures extended even to the trailers. In the promotional videos for *Avengers: Endgame*, scenes featuring costumes different from those in the actual film were used, and certain characters and props were digitally removed. Captain America’s 2012 suit was made to look like a different outfit to hide the fact that he was wearing it, and Black Widow’s hair color was adjusted so viewers couldn’t guess the time period. Captain Marvel’s shorter hair was concealed by her helmet, and Thor’s Mjolnir was also removed from the trailer.
The scene of Tony Stark’s funeral in *Endgame* was also described to the actors as a “wedding” during filming. This was because the mere sight of the MCU’s main cast gathered in one place could have been a spoiler.
From fake names and fake scripts to different costumes and hairstyles, the removal of CGI, and even disguising a funeral as a wedding—as the scale of the productions has grown, Marvel’s spoiler-prevention measures have evolved as well. In *Doomsday*, where dozens of heroes reunite, a “war against spoilers” as intense as the battles in the movie itself has already been waged off the set.