Avengers: Endgame co-director Joe Russo has revealed that the iconic "Portals" sequence was originally going to play out very differently, and he had to fight for the version we saw in the

The portals scene was reworked in post-production (along with, famously, Robert Downey Jr'.s 'I Am Iron Man' one-liner) and the rest is history – even if Endgame writer Stephen McFeely freely admitted, "I thought the first cut worked pretty well."

Avengers: Endgame saw Hulk putting on the Infinity gauntlet and snapping the blipped characters back to life. But unless the actual moment, nobody was sure how their return would be shown onscreen. Directors Joe and Anthony Russo claimed the portals scene underwent a lot of changes in the post production.