B`loody Mary

B'loody Mary Smith is a re-write of JK Rowling's Hermine Granger, one of the many (all) characters who are rewritten beyond recognition.

Backstory.
B'loody's birth parents are deceased, her mother (a vampire) from which she acquired her magical talents was killed by Voldemort. Her father (also a vampire) hung himself out of grief despite vampires only being able to die by cross or stake (The only character to take the noble way out of this Gillespiean nightmare). The closest thing we have to their names is the surname "Smith". She was adopted into the granger household and was accepted into Hogwarts. Though initially in Gryffindor, after B'loody changed her name and converted to satanism she was transferred to Slytherin.