During Season 2, it was revealed that she was born from Duchess, a show dog. She was then a stray after her owner sold her to the adopting dogs centre.
At the end of season 2, (graduation day) after reuniting both halved of the moonstone by Freddy and his classmates, she could no longer transform into human in the daylight. Freddy promised that he would solve the problem.
Batty is self-reliant, charismatic and quick-witted, she is excellent at problem solving and coming up with solutions at a moments notice, she cares deeply about honesty and is very hurt when she is lied to, perhaps because of this, she prefers to work alone. She can be quite stubborn and resistant to let others in.
Originally, Batty hated werewolves very strongly, but her friendship with Freddy seems to have turned that mindset around, she still does not like when others look down on her or her kind. When in human form, Batty appears a bit klutzy and quirky. She is not adjusted to human mannerisms and still very much acts like a dog.
As a dog, Batty is a small tri-colored mutt, she is a golden tan with a lighter face and belly, she has one patch over each eye of a darker tan, her ears are styled similarly to a Papillon's, and match the darker brown of her check and head fluff, she has a streak of blonde over her left eye. Her eyes are amber.
In Batty's human form, she has light brown hair tied in twin tails, wears a red checkered shirt with the symbol "K9" on her right shoulder and a yellow undershirt. She also wears ripped jeans and light lime shoes.