Name: She has a real name, but she wont tell anyone. She goes by Spat.
Age: 15
Modification: By manipulating the cells of her brain and nervous system, she can "turn off" any of her feelings at will, whether they are emotions or pain.
Flaw: Because of the mental stress caused by this, she has constant anxiety which she cannot shut down, and horrific nightmares every time she sleeps.
Personality: In a word, unpredictable. She is constantly manipulating her emotions to fit her needs, so how she really is is a mystery to most. She is almost always anxious though, and any near her can hear the screaming at night.
Appearance: In appearance, she looks like a normal human girl. Wavy brown hair, green eyes, soft yet open smile... she looks too normal to be real, here.