James "Rhodie" Rhodes: A Major in the United States Air Force, Rhodie and Tony were friends since the latter's brief stint in military school. Rhodie was one of the few people who ever treated the Stark prodigy like anyone else. He doesn't put up with Tony's bullshit, and his no-nonsense attitude is what earned Rhodie the position he has in the US Armed Forces.

Harold "Happy" Hogan: Tony's longtime driver and bodyguard, he once was an amateur boxer before he retired. Happy has a rather dour expression most days, and is incredibly protective of his employer.

Virginia "Pepper" Potts: Once Tony's personal assistant, Pepper has quickly risen the ranks in the Stark Industries executive ladder. Pepper Potts is currently the acting COO of Stark Industries.

Obadiah Stane
Werner Zytle (Count Vertigo)
Anton Vanko (Crimson Dynamo)

Mark I: Currently Destroyed. Limited capabilities, and designed to escape a cave in Afghanistan.

Mark II: Designed solely as a "test model" to prove an armored weapons system was viable. It was not outfitted with weapons, and had limited flight capabilities. Was scrapped and re-designed into the Mark III.

Mark III: The first Iron Man suit to be mobilized in Tony's campaign to destroy Stark technology. It was used for the first year, until Tony decided that he could improve his design and incorporate the surplus of Stark weaponry in his warehouses. It was rendered inoperable.

Mark IV: The Mark IV was designed to provide minor improvements. After a near miss encounter with the United States Air-Force, the improvements included non-combat flares and improved thruster capabilities. Stark weaponry, including anti-tank missiles and "Taser Pellets" were added to make the armor more effective against various threats.

Mark V: An improvement that came only four years into Stark's crusade. Tony improved his arc reactor design for personal use. This new suit was faster, stronger, and had stronger repulsor technology than previous suits due to the improved energy output of the arc reactor design. This suit is the first to employ the "unibeam" weapon system, and a triangular "window" rather than the circular design of previous models. The suit is hidden away in Tony's remote workshop in the event of a disaster.

Mark VI: This suit was equivalent in power and functionality to the Mark IV, but was designed for mobile deployment. It has a limited range of weapon systems, as it is meant to be used in a pinch. This suit is stored in Tony's private jet for quick mobile deployment.

Mark VII: The "Emergency" suit was designed in association with emergency services. It uses the advanced Arc Reactor technology to increase the suit's strength and durability significantly. It was designed with no traditional weapon systems to instead allow for more power to be directed to increasing the suit's strength capacity, and to allow for the deployment of fire retardant.

Mark VIII: This Drone suit was the first suit designed for remote deployment. It doesn't have the expansive weapon's systems of most of his suits to cut on energy usage. It can either be piloted by Jarvis for limited functionality, or by Stark using a remote console.

Mark IX: Following Trasnia, Tony designed the "Football" as a result of his growing paranoia. This suit is always guarded by Tony Stark's personal driver and pilot, Happy Hogan.

Mark X: Tony's current suit, the Silver Centurion manages to combine the best parts of all the former Iron Man suits. It has the most developed weapon system, saves on power consumption significantly, and is the first designed entirely for mobile deployment. While most suits required some sort of guided suiting up procedure, the Silver Centurion can deploy remotely as a canister from Tony's private workshop. Once at it's location, the canister deploys the suit for use with a mobile suiting procedure.