Avengers: Infinity War directors Anthony and Joe Russo reveal big time bad guy Thanos (Josh Brolin) and Asgardian Avenger Thor (Chris Hemsworth) will be at the forefront of the Marvel Cinematic Universe's biggest ensemble yet. Asked by Fandango which characters are invested with more screen time than others, Joe Russo pointed to the Infinity Stone-obsessed Mad Titan, "even though he's not a character that had a huge preexisting story in the Marvel universe." We wanted to tell a story that they weren't expecting, and the story is told from the point of view of a villain, which I think is also really unique and risky for a commercial film that will surprise the audience.