Avengers Endgame aka Avengers 4 Trailer makes FANS upset; Here's why. The trailer for the much-awaited Avengers Infinity War 2 a.k.a. Avengers 4 is here along with an official title. The film is now called Avengers: Endgame. The trailer ends with Ant-Man making his long-awaited entrance into Avengers HQ. But fans are upset watching this trailer.