VIDEO : Robert Downey Jr. Calls 'Avengers: Endgame' Ending The Best In History Of MCU

Marvel fans are counting down the days until they can finally see Avengers: Endgame and the recent trailers and clips are only hyping that feeling up more. After the emotional ending of Avengers: Infinity War fans are hoping to see the remaining heroes restore the universe and at least get a few of their friends back in the process, but if you thought Infinity War's ending was crazy, Iron Man actor Robert Downey Jr. says you haven't seen anything yet.