'Avengers: Doomsday' directors release new behind-the-scenes teaser for the Marvel movie, and I think it's hiding two big clues about its story

The prevailing theory is that Doom will be a multiversal variant of the MCU's Stark/Iron Man, who Downey Jr portrayed between ...
IGN

Avengers: Endgame Post Credits Scene - That Sound Confirmed As Iron Man Easter Egg

Spoilers ahead for Avengers: Endgame! UPDATE 2: Avengers: Endgame editor Jeffrey Ford has confirmed that is indeed an audio callback to the first Iron Man movie at the very end of Endgame, and also ...
Vanity Fair

Avengers: Endgame—What’s the Sound at the End of the Credits?

This post contains frank discussion of the most crucial plot points in Avengers: Endgame. If you’re looking for a spoiler-free, risk-free review, you can find it here. But if you’re about to wander ...