Nastasia Hendrix is a student at Alma Aleron, and a friend of Zane Walker, and later James Potter. She exhibits a split personality (mentally separated as both Nasti and Asia), which is later broken after the Asia part of her "dies off" in an attempt to rid of Judith, the Lady of the Lake. Leaving only the Nasti persona left.
She also has animagus capabilities, being able to transform into a snake at will. Before losing her Asia persona, her split personality caused her to transform into two separate snakes. Nasti having black skin, and Asia pink (reflecting her hair color).