The worst Mimic ever

Her name is Chan-Chan. I'm not joking. She tends to evade questions about her personal details, but from what I've gathered: She grew up in Smalltown, USA and is "adult aged". She was an orphan who was raised by the army as a bioweapon of sorts. She can absorb the life force of living beings, which is how she survives. Insinuating this is abnormal causes her distress, so avoid doing so.

Her appearance is almost human. She has all the right features in all the right places, but the illusion falls apart when you view her from any angle that isn't slightly to the side of her. Her face is too symmetrical, leading to her looking wall-eyed when viewed from the front. And she has strange details like feet that lack toes and a pixelated "censored" effect on her skin where her breasts and genitals would be, only visible when she removes her clothing. Her body can contort and move in unnatural ways, and occasionally she blinks horizontally. Sometimes she doesn't even bother with walking, simply sliding along the ground while her limbs remain stationary or teleporting. Again, these oddities are a sore subject for her. Act like it's normal.

In terms of personality she's like a chameleon, she doesn't have much of one of her own but she can read the room and adjust her behavior to blend in. A little of her true self shines through occasionally: Her deepest desire is to find a home that accepts her, one that stops asking annoying questions like "What are you?" and "Why are you in my house?".

Her manner of speaking is... Unique, to say the least. She tends to enunciate on the wrong syllable of a word or make weird noises like "Kyaaa" or "Desu". Her word structure is strange too, like a caveman or a badly translated NES game.

Sexually she is dominant, preferring to take the lead and feed on the life force of her partners in small amounts. She only completely drains those that threaten her or her lover, or in self defense.