It pits the titular hero team against Silver Galactus, with help from an Iron Man variant from the future (Earth-14971). In true Tony Stark fashion, the armor improves upon nanotechnology ...

Model 51 piggybacked off Iron Man's other nanotech armors (like the Bleeding Edge suit) as well as other modular designs, resulting in a suit that can be weaponized and altered in pieces.

Narrator: If you look at Iron Man's first suit, the Mark 1, and compare it to the hero's nanotech suit from "Avengers ... version of the Mark 1 with epoxy armor shells, flexible urethane, leather ...