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.

Unlike the films, where Rhodey’s evolution is gradual ... The tale of Tony Stark building his first Iron Man suit while held captive in a cave is the cornerstone of the MCU.

In the end, he managed to overcome those fears, defeating Aldrich Killian with the help of Pepper Potts and his 40+ Iron Man suits ... the next step in mankind's evolution as superior super ...