Well, first there was an evil man who lived beneath Central. He was the father of seven children, the Homonculus. They all had the potential to be as bad as he was. One of them, who was called Greed, had his own plans for greatness and turned away from them. The others caused nothing but trouble. Many of them were stopped by Edward Elric, Alphonse Elric, Colonel Mustang, myself, and others. But even as his children were stopped, he still had control of the entire country. The colonel, Ed, and Al all had to lay low. As for me? I found an ally with Greed. He worked for the evil man for awhile, but soon enough, he was fighting to stop him as well. That's how I had become a Homunculus. Do you remember that?

[He shows the back of his hand, which is now bare.]