User blog comment:IamJakuhoRaikoben/Chapter 500: Fire and Ice, Review./@comment-84.197.227.90-20160906172625/@comment-193.190.73.129-20160907214210

Well, Ban did attack Meliodas, but he believed he could get Elaine back. Here there was a possibility something good could happpen for Ban.

Gray on the other hand would only want to destroy END due to it being his late father's wish. But said father is already dead and won't come back. Besides, Silver never knew who or what END exactly is. He only had a vague description of him being the strongest demon.