The Mark I is the first version of Tony Stark's now-famous Iron Man armor. It was created from improvised materials and sources provided to him by the 10 Kings for the purpose of forced arms production. The Mark I was built with an emphasis on survival, featuring bulky armor meant to absorb the small arms available to the insurgents and survive. The Mark I relied on wrist-based flamethrowers for ranged attacks, and could only fly with a crude jet propulsion system managing to take it a few miles into the desert. The Mark I was retired near immediately after creation, upon Tony's rescue and return to the United States.
The Mark II was Tony Stark's first attempt at creating one of his suits using the state of the art resources and machinery available to him at Stark Industries. With the help of J.A.R.V.I.S., Tony designed the suit of a titanium-gold alloy, while also powering it through a new enhanced palladium arc reactor. The armor is far more advanced, featuring energy based weapons, precise fast flight, and an onboard heads up display controlled by J.A.R.V.I.S.
The Mark III Armor was the first finished production armor that Tony Stark. The Mark I was built under duress, without industrial equipment or materials, and the Mark II was the first prototype model of a sleeker / more advanced armor. The Mark III on the otherhand was the first of the armors to feature Stark's now standard red and gold paint job, and was outfitted with more weapons, armor, and equipment aboard than its predecessor. The Mark III was heavily damaged during an attack on Tony in California and has been retired to the Hall of Armor in favor of the Mark IV.
Year: 2016 | Armor Iteration: 4 | Status: Active | Deployment: External Frame | Finished Unit
There is little of note to say about the Mark IV Armor. It was originally built as a replacement for the Mark III armor, which sustained severe damage during its last fight. The Mark IV is slightly better armored, and armed, than the Mark III, but lacks much advancement. It is used concurrently with the Mark V, which is a lighter model that can be deployed from a briefcase.
Year: 2018 | Armor Iteration: 5| Status: Damaged, Active | Deployment: Briefcase | Finished Unit
The Mark V is, as the Roman Numeral in its name implies, the fifth version of Tony Stark's Iron Man armor. It is a break away from the traditional style of his second, third, and fourth iteration in that the fifth is a lighter weight model and lacks many of the traditional features of the former models. As such, use of the Mark IV is still necessary should the situation require stronger armor or additional firepower. Being a newer model the Mark V is the first to feature Stark's new Yinsen model of thrusters and afterburners, shaving twenty-percent of the power drain from the earlier model and allowing for faster in-air travel than before. The Mark V will likely face retirement after the strain placed on it during the rescue of Peter Quill.
Year: 2018 | Armor Iteration: 6| Status: Under Production | Deployment: Robotic Arms | Advanced Unit
The Mark VI armor is a prototype armor, currently under development by Tony Stark. The armor serves as a more advanced, and higher powered, version of his Mark IV Armor. A shortcoming of the Mark IV was its lack of advancement due to being a rapidly produced replacement for the heavily damaged Mark III. To make up for those flaws the Mark VI has been outfitted with a cutting edge suite of weapons, support for increased power output, refined Celer-Class thrusters, and more durable armor—capable of withstanding the type of damage dealt by Whiplash that ultimately destroyed the Mark IV. The Mark VI is still under development and a stable final design has not yet been produced.
Year: 2018 | Armor Iteration: 7 | Status: Under Production | Deployment: Rocket Pod | Advanced Prototype
The Mark VII is the first armor capable of deploying to Tony, rather than being manually activated by him. Much like the Mark V it is more mobile, though the Mark VII is capable of deploying to Tony, even mid-air, and auto-attaching itself to him. It locks onto a pair of bracelets that show it how to latch on. The armor is far more upgraded than any of Tony's previous armors, both armor and armament-wise.
The Mark VIII is an upgrade to the Mark VIII, allowing for automation over the suit, and a quick exit from the suit. The Mark VIII is the first model in a planned line of suits, which Tony has dubbed 'the Legion'. The suit is fully controllable by J.A.R.V.I.S. The suits following the Mark VIII are often considered to also be a part of the Legion, and some may not come with a great amount of detail.