In what Marvel calls "the ultimate and deadliest showdown of all time" (no pressure), Avengers: Infinity War brings together all of our favorite Marvel superheroes for an epic battle against Thanos (Josh Brolin), whose main goal is to capture the Infinity Stones. If successful, Thanos would use the stones to power his Infinity Gauntlet and possess godlike abilities. Nothing a little Hulk smash couldn't solve, am I right?