User blog comment:IamJakuhoRaikoben/Chapter 356: Tartarus Arc, Review./@comment-5343732-20131019064909/@comment-24039250-20131021164227

Here is my theory on Silver (by the way it is tied into the Gray/Silver theory so if there are haters of that theory then sorry): Silver was created as a demon who for the most part did his thing with Tartaros such as killing people and stuff like that. Than one day while in his human form, he meets a girl who he falls in love for. They eventually get married and have a child, who is (and this is where the Sliver/Gray theory starts) Gray. His fondness of humans and connections with them would explain why he like to be in his human form. Now back to the story, years go by and he and his family are living happily when one day Deliora comes out and kills everyone including his wife and (to him anyway) his son. With rage in his heart, he swears to avenge them and with the knowledge of demons since he is one, he creates an art of magic that can kill demons, Demon Slaying Magic. From that day forward Silver spends his days killing demons as a means to avenge his family and maybe even guilt since he is a demon and that somewhere deep down he feels that his presence led to their deaths. That's just a theory of mine, let me know what you think of it. Also when Gray and him realize who the other is we are going to get our usual sad FT moment where everyone cries. Similar if not exact to the Gildarts/Cana scene.