Father Gabriel... I found him to be ungrateful. But there's two sides to the spectrum. He was dealing with the grief of what he did to his flock and felt that Rick's group came to him to punish him wrath of God I guess. But in the same term they were the ones that saved him and they've been protecting him and allowed him to come with them to Alexandria. So what he did was a pussy move when he went to Deanna but again redeemed himself in the last episode. I guess we will see an evolution in his character in the upcoming season.
I love me some Morgan but he definitely suffer from some serious post traumatic stress syndrome and I guess the cheese maker brought him back to be a better person but in the world they're living in you can't be that person you must kill because if you don't you are putting the others that have your back at risk.
As bad as I was Carol is she always looked out for her group no matter the situation. I love me some Carol. Carol exemplifies the true meaning of by any means necessary.