Sure. I’m still on episode 1 of his series, but the reason he becomes a superhero in it is because he has a family history of people who were in military service. He also an outstanding figure in his home state of California for his medals of honor. Considering how shaken up he is because of some of the traumatic experiences he’s had and tough decisions he’s made, he’s really just trying to be a patriot to the country he’s served. Although, (unlike Superman who the epitome of pure heartedness) he does have an edge to him. He can be brash and rude sometimes. All just to get his point across. That’s his flaw, he can be too cocky for his own good. He is working on it though.
He’s pretty much assumed a leadership position his whole life and despite his flaws, he doesn’t want anyone to think less than highly of him.
Sorry if this was long .