In the Marvel movies, iron man's iron legion once appeared.
However, the Iron Legion in the movie is controlled by Jarvis or Ultron and has no sense of autonomy.
But in the comics, the Iron Legion is made up of a group of superheroes wearing Iron Man's old armor.

In Iron Man #300, the villain Ultimo makes a comeback, knocking Tony into a coma.
At this time, in order to stop the evil deeds of Ultimo, the war machine stepped forward.
But he knew that his strength alone was not enough, so he recruited a group of heroes and put them on Iron Man's old armor to form the Iron Legion.
So, in addition to the war machine, what other members of the Iron Legion are there?
Eddie Mackey
The name may not be familiar to Marvel movie fans, but in the comics, he's a good friend of Harpie Hogan and an employee of Tony, who also considered passing on the iron man title to Eddie.
In the Iron Legion, Eddie wears Iron Man Armor Model #1. Although he put on his armor, he was eventually defeated by Ultimo.
Hapi Hogan
Happi Hogan is Tony's bodyguard and driver. In the Iron Legion, he wears Iron Man Armor Model 2.
Don't look at the Hapi in the movie is a bit bloated, but in the battle with Ultimo, as a former boxer, he is a pretty good fighter.
Carl Walker
The hero went astray and worked for the villain Justin Hammer for a while, only to be converted thanks to Tony.
He had worn his own armor before joining the Iron Legion, and later in the Iron Legion, he was equipped with the Iron Man Armor Model 4.
Mike O'Brien
Mike was a former NYPD officer and later a member of Project Pegasus, as well as the security director at Vault Supervillain Prison.
He had been convinced that his brother's death was related to Tony, and after many confrontations with Tony, he finally believed in Tony's innocence.
Mike wears Iron Man Armor Model 8 in the Iron Legion, responsible for evacuating surrounding cities after defeat.
Bethany Kebby
This is the only female hero in the Iron Legion. A former employee of Stark Industries, she develops a relationship with Tony after she thought her husband had died.
Later, she became Iron Woman and wore Iron Man Armor Model 9. During the battle, she ignores the orders of the war machine to retreat, fighting with him until the moment When Tony comes to his aid.