Be careful, now. The only thing inside of him is his urge to feed. I created him to refine the red water. He doesn’t need a mind.

Naughty boy. How can you be so selfish? The philosophers stone has been activated.

Do you not realize that using alchemy will trigger the philosophers stone and waste it entirely?

Envy was the very first homunculi. Created by Hoenheim almost four hundred years ago. The result of the failed human transmutation of our son who'd died of mercury poisoning.