Iron Man is one of Marvel's most fundamental characters, a founding Avenger whose legacy has lived on beyond Tony Stark in plenty of unexpected ways. Over the years, he's inspired plenty of other heroes in other timelines (especially his Marvel Cinematic Universe counterpart), highlighting his importance to the overall mythos. But in one of Marvel's latest timelines, Tony has become inspired to carry on a different heroic legacy.
Source:https://www.cbr.com/iron-man-iron-lad-young-avengers-legacy-marvel/