She is the Leader of The Saffron city Pokemon gym she specializes in using Psychic type Pokemon.
Sabrina is a very unique Gym Leader in her own rights, even though we know so little about her. We do know that she has various psychic abilities, such as telekinesis and telepathy, and perhaps more that we do not know of. We do know that she has had these abilities since she was a young child, and possibly since birth, though that has not been confirmed. While the point at which she gained them isn't certain, what certain is she gained her psychic abilities from a person, her father. Her father also had great psychic powers, such as telekinesis and the ability to teleport. It was clear however early on that her powers far exceeded her father's, and thus he began to fear her ever so slightly.
As Sabrina's powers grew stronger, she grew more malevolent. She began to use her powers for bad intentions, such as turning her mother into a doll. As she continued to use her powers for evil, she began to psychologically change as well. She began to loose the warm heart she used to have, and instead became cold and solemn. Her mind totally changed, and soon her deep self began to manifest into two separate beings, a little girl who looked like Sabrina as a young child, with a bright personality. The other half of herself was in fact herself grown into a woman, with a stark attitude and dry emotions. At some point she also became the Gym Leader for the Saffron City Gym, but also made it into a place where other local psychics could train with their own abilities.
Sabrina is a character of the Pokemon franchise, and thus, was created by Satoshi Tajiri. Her first episode is Abra and the Psychic Showdown, or the twenty-second episode of the Pokemon series. She is voiced by Kae Araki in Japanese, and Lisa Ortiz in English.
Sabrina is a very unique character in the Pokemon series as far as physical appearance is concerned. When you take a first glance at her, one of the first things you will probably notice is her hair color and style. Firstly, her hair color is stated to be a blue color, though it is often depicted with a dark green or dark violet appearance, as seen in the anime. Also, her hair is styled in a unique way, in that her bangs appear to be chopped like an arrow head going towards the center of her head, and three small stray hairs right in the middle of her bangs. The rest of her hair is noticeably less appealing, being flat and long enough to reach her mid-to-lower back.
Her attire is also somewhat striking yet simple, she wears in most depictions a long rose-red colored dress to about the length of her mid-thigh. The dress has a distinctive color, and three pairs of gold buttons running up it. The dress also has subtle black sections on it. These black markings go around the color of the long-sleeves, and on the sides of her dress reaching from her waist to her armpits. She wears simple black boots that run all the way past her knees to her lower thigh's.
Her primary Pokemon was an Abra when she was first introduced, but it evolved into a Kadabra in a battle against Ash's Pikachu. After her re-match with Ash he passed his Haunter on to her to be her second Pokemon.
The adult version of Sabrina is very stoic and crude. When she begins to act this way as she reached her teenage years, she began to push all happy thoughts and positive influences in her life away, thus creating her younger form. Adult Sabrina however say's little and does much, she doesn't like long explanations or a big speech, she likes it short, cut, and to the point. She shows virtually no facial emotion or positive body language, because she never really feels it anymore.
Sabrina's child version is far more expressive about her emotions and tends to mimic those emotions of a young harmless child. She has a very distinct giggle that tends to set her apart and echos, though that may be due to her psychic powers.