Following is a transcript of the video. Narrator: If you look at Iron Man's first suit, the Mark 1, and compare it to the hero's nanotech suit from "Avengers: Endgame," a lot has changed.

But, at the end of the day, Iron Man is able to rival superhumans and gods because of one thing: his suits - and Iron Man ... allowing Tony to fight in his Mark 72 armor while the Sentinel Buster ...