Agent 19

She's a nobody. A loner. The girl who's invisible. The girl who no one has ever heard of. She's a myth. A tale. A legend. She watches and waits before she attacks. She is beauty, herself. She's a vicious, ferocious killer. Her face is devoid of emotions all the time. She never laughs, smiles, or frowns. And, she never ever backs down from a challenge. If you see her, watch your back. You'd be lucky to even get away, but if you're her target, then you won't ever be seen again... She's Agent 19.
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"You think you're better than everyone don't you?"

"I don't think I'm better. I know I'm better"

"Then why don't you prove it to us,"

"Gladly, they don't just fear me, Agent 19, for no reason"