Human
He was the most human of them all
For days, months after Lust's death, his moans were heard
"Lust…Lust..!"
The other Homunculus pitied him, mocked him, and envied him at the same time. They envied him for the fact that he felt, he felt pain and loss unlike the others. But they will never truly understand his anguish.
Yes, he was the most human of them all.