The thing I liked about Godai is the way they played with his issues on violence. Like how much he is forced to fight even if he knows that throwing a punch (as much as it feels good in the beginning) will definitely be regretful. He is thrust into a situation in which he's the only one capable of saving people through his fists, and as much as some people take it for granted, it's actually hurtful for Godai since he doesn't believe in violence and he's only stuck with this option given that the race of enemies he's facing feeds on what he dislikes the most. This personality of his is his very own saving grace against losing everything just to fight Number 0.
Personally, I loved the parts wherein Godai loses control, not because I like violence, but because I can see the exclamation point driven by the show. Like when Godai battles the Porcupine Grongi, it pretty much shows the very focus of the series... What Godai is facing, what he must become, and what he truly feels about that.