Silver Fullbuster ( Shirubā Furubasutā) was an Ice Devil Slayer, the father of Fairy Tail Mage Gray Fullbuster, and a member of Tartaros' Nine Demon Gates. He died in X774 along with his wife, Mika, but was then resurrected by Keyes, serving as a test subject for his experiments. He was later resurrected by Konton and indoctrinated to aid the Coalition in Five Worlds War. He's the father of Gray Fullbuster.