>2006-2008
King Asshole of the Marvel Universe, everyone hates him, started between heroes wich later got Cap killed, sent Hulk into space without considering he might come back even angrier, literally broke all trust he had with the hero community to become a super dictator with Shield on his side, basicly a villian
>2016-2019
one of the most beloved super heroes on the planet, everyone loves him and his quirky billionaire ways, becomes the literall savior of the universe in the movies

is there any character with a more polarizing 180 in development than Stark?