"On your left." Those three words are part of the DNA of every Marvel fan and moviegoer who witnessed Avengers: Endgame's iconic portals scene. But it was almost very different. Now, though, Endgame co-director Joe Russo has revealed the original plan for the climactic moment – and how they fought "for months" to change it in post-production.

From Black Widow’s sacrifice on Vormir to Tony Stark’s heartfelt "I love you 3000" phrase and Steve Rogers' emotional ending, every scene packed an emotional punch. But perhaps none were as iconic as the return of the Infinity War casualties.