With a movie as big as Avengers: Endgame, there's probably an endless amount of edits and behind-the-scenes moments we have yet to see. During a panel at D23 Expo in Anaheim, it was revealed that a big change was made to the Captain America fight from 2012 to help differentiate the two Caps.For the Cap vs. Cap brawl, a computerized cowl was added onto the 2012 version of Steve Rovers since test audiences had a hard time telling the two heroes apart.RELATED: Marvel's Phase Four Plans Had No Effect at All on Avengers: Endgame's Story“When you have Cap fighting Cap, you wanna know which one is the good Cap versus the other Cap," one of the moderators explained. "The outfits are very similar and clearly the actor is the same actor. We wanted to make sure you could differentiate which one is who.”

As it turns out, the fight itself was quite a complex scene to make, since we do see two Chris Evans' multiple times in the same shot.

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Directed by Joe and Anthony Russo, Avengers: Endgame stars Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Brie Larson, Paul Rudd, Don Cheadle, Karen Gillan, Danai Gurira and Bradley Cooper, with Josh Brolin as Thanos. The film is now available on Digital HD, Blu-ray and 4K UHD.