The Iron Monger is a suit of armor based on Iron Man's one. It has been donned by several people, two of which have been involved in Captain America's adventures.
This part of the article contains info not directly related to Captain America, his allies or his enemies. However, this info is necessary to provide context to the rest of the article.
The first and best-known Iron Monger was Obadiah Stane, a businessman who took over Stark Enterprises. After Iron Man defeated Iron Monger and got evidence of his corrupt activities, Stane killed himself instead of facing justice.
Cristoph Pfeifer was an agent of the Red Skull who donned the Iron Monger armor.