Name: Mimzy
Age: A few days, or minus 1 million years, depending on how you look at it.
Sex: Female.
Height: 4'6", not counting ears.
Eyes: Brown.
Species: Bunny.
Fur: Tan & white.
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Peculiar features:
One of many Mimzys created in the distant future, she is the only anthropomorphic Mimzy known.
All Mimzys are named Mimzy, and it's unlikely that any Mimzy will meet another.
She is a semi-organic artificial lifeform, incapable of breathing, eating or talking, but instead survives entirely on her surrounding environment, and particularly thrives on the energy from companionship, especially friendship, or even more intimate forms.
She resembles a fully-living, self-mobile plush bunny, whose only differences, physically, from her sisters, aside from made anthropomorphic in general, include fully-working paws/hands, as well as certain attributes of an organic female.
Although only a few days old, she has the physical sexual attributes of a typical early teen girl, and, although incapable of reproducing, is fully sexually mature, and despite being a living plushie, will feel like any organic female, including self-lubrication.
Although she cannot eat or breathe, thus incapable of talking conventionally, she speaks into others' minds.
She has no heart, physically, but you would never know it meeting her.
Although created with an incredible knowledge base, she has no preferences for anything except for what she was created for, as she hasn't lived long enough to develop any preferences yet.
She can live indefinitely, as long as she is cared for and not abandoned.
When touched, she has the feel of a soft plush chenille fur, yet she is warm to the touch, feeling very much alive.
She cannot blink but she can close her eyes.
She has no real mouth, but she can display emotion, such as smiling or sadness. Her ears move, too, for expression and to listen.
She is incapable of lying, but will only say what needs to be said when she thinks it's necessary to do so.
She will wear clothes, and she arrived wearing a pair of light green shorts over light green panties, and a light green camisole that does little to hide that she has breasts, even nipples. She is decidedly feminine.
She has no special powers beyond a computer-like knowledge base and being able to communicate telepathically. She has no desire to control anyone or anything except herself.
As intelligent and knowledgable as she is, she is a very curious bunny who is very keen on helping as best as she can.
Even though she is an artificial lifeform that is for all practical purposes a supercomputer with emotions and a deep compassion, she refuses to even consider herself perfect, or for that matter, superior.
All Mimzys are female, but this Mimzy is even moreso, especially physically.
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Purpose:
She is sent in time to be a companion of a person who will leave a lasting contribution to the future, but needs a ray of hope in his life for that to pass. 
For this reason, she is built differently from her sisters, and is never designed to return. Once no longer needed, she will disintegrate to nothingness, as if she never was there. 
She is meant to thrive on companionship, but she is perfectly capable of taking care of herself. As she was designed for companionship, including sex, her attitude towards everything revolves around caring, even being deeply concerned.
She is always willing to make friends, yet knows when not to. But you couldn't have a better, more compassionate friend than Mimzy. :)