When Avengers: Infinity War hit the cinema the big bad of the movie, Thanos, also made a guest appearance in Fortnite. Players were able to pick up the Infinity Gauntlet and become Thanos for a short period. This granted them powerful attacks but thankfully not the ability to wipe half the players off the map in a single snap, although come to think of it that would have been fun.
A Tweet from the Fortnite account indicates that there will be a second event to tie in with Avengers: Endgame, and it looks like players will be getting Captain America’s shield to toss about. Full details will be revealed on 25th April, with the movie launching on 26th.
— Fortnite (@FortniteGame) April 22, 2019