SEE ALSO: 'Avengers: Infinity War' memes are here because we're all just trying to cope Thanos' big freethinking idea? Saving the universe by killing 50% of its entire population, chosen at random.
Speculation surrounds cameos of Marvel characters in the movie, including the return of Thanos from a different timeline. Killing Thanos in the movie could undermine his legacy as the MCU's ...