Iron Man has been building his Mark 72 armor for weeks after Tony's archenemy Feilong stole Stark Industries out from under him, confiscated all of his Iron Man armor, and ruined his reputation.

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.