There was one SOLDIER named Sephiroth, who was better than the rest, but when he found out about the terrible experiments that made him, he began to hate Shinra. And then, over time, he began to hate everything. Except for you. He may not show it but he cares deeply for you inside Sephiroth is the main antagonist of Final Fantasy VII and Final Fantasy Sephiroth is a tall man with a muscular build. His long silver hair has bangs parted to either side of his face.