AKA The Pentagon Armor I-B. Iron Man wore this suit during the final few months of the original Avengers team, when he was acting as the Secretary of Defense and the team was closely aligned with the United Nations.

Following the dissolution of the Avengers, Tony continued wearing the suit until it was badly damaged during a fight with the Extremis-powered terrorist known as Mallen. Tony subsequently injected himself with the serum and donned the more advanced Extremis Armor, officially making the Pentagon Armor I-A obsolete.

In Other Media

Television

Fantastic Four: World's Greatest Heroes

Iron Man appears in the episode "Shell Games," sporting the Pentagon I-B Armor.

Merchandise

• The Pentagon armor was featured in ToyBiz's Marvel Legends line as part of Series 8. Dubbed "Modern Iron Man," the figure came complete with a display base showing destroyed Ultron units, as well as a poster book with a cover by Adi Granov.
• A 12-inch version of the same design was also featured in ToyBiz's Marvel Legends Icons line.
• The figure was featured in Diamond Collectibles' Marvel Select line.
• The armor was featured in Hasbro's Marvel Universe line.
• The armor was featured in Hasbro's line for Iron Man 2.
• Hong Kong-based toy company Sentinel produced a figure of this armor for the RE:EDIT line under the name "Armorize Iron Man." The figure came with removable armor, revealing a Tony Stark likeness underneath.