Mark Hamill explained that his iconic character was going to show up even sooner.
Disney is adapting the animated classic as a live-action film, with a little help from Marvel filmmakers Joe and Anthony Russo.
Iron Man himself came up with the viral "Avengers" phrase.
"Nobody owns cinema. We don't own cinema. You don't own cinema. Scorsese doesn't own cinema," Anthony Russo said.
After the spoiler ban lifted for the film, Chris Evans, in particular, went nuts.
And Chris Evans (aka Captain America) is PUMPED!
The "Avengers 4" directors have said the epic 1984 crossover comic series is one of their favorites.
Marvel's Russo brothers love to tease fans.
Directors Joe and Anthony Russo answer our most pressing questions.
In an interview with HuffPost, Nate Moore said he asked the Russo brothers to reconsider the death.