Avengers: Infinity War, of course, will be most enjoyable for those who have faithfully followed the ups and downs of the «Marvel Cinematic Universe,» although it has enough of its own stand - alone popcorn pleasures to please even those who don't know (or can't remember) whether Thor's brother Loki is an outright villain or a conflicted case of tragically misdirected anger, or how Iron Man's artificial intelligence computer became its own physical entity, or why there is so much lingering
bad blood between Tony Stark and Steve Rogers, or
whatever happened to that super-archer played by Jeremy Renner.