Forgotten character from Attack on Titan

(character from Mobile Suit Gundam: The Witch from Mercury
One of Elan Ceres's doubles, dispatched to the school by the Peil company. He has an angelic smile, that hides suffering)
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I changed my face just to stay alive. There's no way I'm dying in vain.

Enhanced Person Number 5

Private of the MP Brigade 

I'm prepared to go to any lengths necessary to stamp out corruption and injustice!
Even if that makes me an enemy in the eyes of the system, I don't care. I'll fight the good fight!