Source: geek.com

1. Modular Armor

The Modular armor comes in many forms and we've seen a very specific take on it from the films.

Iron Man 3's primary suit, the Mark 42, was a brand of modular armor that could assemble itself on the fly. However, the comics also had the 90s modular armor, which was a more lightweight suit that could allow for pieces to be swapped out with others in order to better prepare for the mission at hand. Going underwater?

Switch out those jet boots for turbines! Space is where it's at? Get that helmet with it's own air supply. Need to take on a big challenger? Maybe swap out the gauntlets for ones with more firepower. Now the Mark 48 can shapeshift to have a similar effect, but it's not as satisfying as the action figure parts swapping that could be happening with a movie accurate modular armor.

And there you have it, a rundown of some incredible suits of Iron Man armor, all of them ready for Avengers 4.