He was ok. He seemed somewhat virtuous although he was portrayed in the opening credits as being a rebel. All of his sins he really accounted for and he seemed like a decent fellow, especially when he showed regret for killing, although it was something he had to do.

I didn't like the emma and sean couple that everyone here digs, it seems to me that Ellie and sean were better because they both had problems that they worked out together. Granted, Sean was better behaved when he was with Emma, but he was also younger and more impressionable. Whatever the case may be, if they bring him back for season 6, then he will obviously be involved with Peter and Emma. It will be a silly triangle that ends up with Emma and Sean together whereas Peter moves on. That may make some people happy, here, but to me, it's really just predictable and stupid. If he does get involved with the triangle in season six, then he will go on to the movie as Emma's boyfriend and either do a "moving on" or he will stay Emma's boyfriend.

That's only a prediction, but if he comes back, that's really the only route he can take.