Iron man was cocky, arrogant and sometimes depressed
Tony Stark is a billionaire genies, he is a wealthy playboy inventor, owner of Stark International, and international. and has the ego to prove it, his ego oftentimes overshadows he own rationality.
Hubris
Peripeteia
Iron mans fate was caused by him saving the world and dyeing in the prosses. He died in his fight with Thanos, he loses his live willingly by taking on all six infinity stones and snapping the mad titan and all of his minions out of existence.
One of Iron man motivations is to redream him for all his many past mistakes. Some of his struggles are lack of self control and his heart
Anagnorisis
Some of Iron mans nemesis's were mandarin in The archenemy of Iron man. The Mandarin is a Chinese nobleman, scientist and former diplomat turned into a criminal mastermind.
Nemesis
I feel like Tonys biggest fear would be failure to protect the would and those he loves and letting the people around him down.