May 4 - Thanos

I'll do my best not to include any spoilers here, but if you haven't made the time to see Infinity War by this point - it's really on you.

For me, every superhero movie is defined by the villain, the better the villain the better the movie.  Black Panther was fantastic in this respect, there was a sympathetic quality to Erik Killmonger - you were torn between understanding his quest and the ends at which he was going about it.

Thanos's motivation is pure, he wants stability in the universe - it's what he is willing to do to achieve it that makes him a villain.

Brilliant.  Can't wait for the next installment.