'Avengers: Endgame' director Joe and Anthony Russo made a huge revelation about an addition to the plot of the film which had to be dropped later.

While marking their presence at the Comic-Con 2019 in San Diego, the duo revealed that they wanted Thanos to go back in time and kill all the Avengers and chop off Captain America's head from the previous film. They wanted him to bring his "severed head" to the last scene of 'Avengers: Endgame'.