The Infinity Saga of the Marvel Cinematic Universe was surrounded by mystery, following Thanos (Josh Brolin) in his quest of gathering all the Infinity Stones to reduce all existing life in the universe by half. Apparently, one of these magical artifacts turned out to be more complicated to figure out than the rest of them, given its direct connection to the characters and the plot of Avengers: Infinity War. During a Q&A session after Collider’s screening of the film back in 2018, Joe and Anthony Russo, the filmmakers behind the project, were eager to discuss why they had to be careful while dealing with the Soul Stone:
This Is Why Marvel Chose Red Skull to Be Tied to the Soul Stone in 'Avengers: Infinity War'
"We knew that we needed to do something special with that stone, but we knew that we also needed it to have an emotional connection to the plot."