But can we agree that Bucky Barnes pretty much took his super villain origin story in First Avenger and said “nope”? He watched the kid he constantly looked out for and defended and tried to cheer up suddenly become not just a hero, but THE hero. He watched himself suddenly become unnecessary for his friend to get by. There was clearly some resentment going on exacerbated by the heavy amount of torture he underwent. It was a similar situation to Loki, only Bucky had always been in the favored role and suddenly loses it. This would be the point that most characters would be seen simmering and brooding and either betray the hero and only redeem themselves by death or let their envy get the better of them and decide to take on the hero. And Bucky just…doesn’t. He has his moment of private hurt and pain and he regroups. His friendship is more important than his pride and he seamlessly steps aside to take a supporting role. He never flinches. There’s never any moment where you even see him THINK about betraying Steve. There’s no scene where he pauses before he helps him. Nothing.
Which is why HYDRA turning him into a monster is even more horrific. Because Bucky had already rejected going that route on his own. They had to MAKE him one. They had to force him. It would have been so easy for Bucky to have become the villain…and he doesn’t even consider it. Bucky is a victim in so many ways.