History
The Iron Rain was an army of 20,000 Iron Man suits piloted by ghost in the machine tech-duplicates of the consciousness of Tony Stark, Arno Stark, Jim Rhodes and Pepper Howards.
When H.E.L.E.N. unleashed the monofilament of the Stark brothers' "space elevators" to create a whip which lashed Earth, the Iron Rain was deployed to save as many innocent lives as possible.
Although lives were saved, the amount of ash produced by the whip's lash interacted with Troy-sourced anti-greenhouse reducers and caused a worldwide temperature crash, and thus a twelve-month winter that caused mass crop failure, mass starvation, and the ultimate loss of five billion lives.
The Stark brothers were executed on the Moon colonies for catastrophic negligence, and all the digital copies of their brains were deleted.[1]