Iron Man (Age of Apocalypse)

Iron Man is the alternate universe counterpart to Tony Stark.

Biography
Through means unknown, this Iron Man built a suit of armor during a war between mutants and humans as there was never anyone who led the mutants in peace.

He was part of the Avengers led by Captain America and consisting of Giant Man, Wasp, Black Widow, Spider-Man, and Hercules. Together they battled the X-Men led by Magneto.

During the battle, two more time travellers, Bishop and Shard, appeared on the battlefield. They took Wolverine and Storm with them as they jumped to another time.

Background
Iron Man's appearance was merely a cameo with no speaking part.

The armor design takes cues from several Iron Man armor designs, including Iron Man 2020. The green color makes him unintentionally similar to a Guardsman.

In the Comics
Tony Stark appears in the Age of Apocalypse universe during the X-Universe story. While he doesn't take the Iron Man identity, he wears a breastplate.