Harry Potter's Villain the Alchemist

Hermione: Teacher, I admire you so much! William: Hermione, admiration is the furthest emotion from understanding. Hermione: Teacher, what are you talking about? William: I mean, your usefulness ends here... — Voldemort: William, you have a grudge against Dumbledore for killing your father! Why do you want to help him? William: For the sake of the greater good, why should the mere revenge of killing one's father be taken seriously? Voldemort: Who is the villain among us? William: A villain should also have the style of a villain! Look at you with a reptilian face, and look at Aizen Sosuke, handsome, gentle and elegant, how can you compare? As a fellow villain, I am ashamed to be associated with you! — Dumbledore: William is a once-in-a-century genius at Hogwarts, and I'm proud of him! Filch: Professor William cured my Squib, and I owe him an outpouring of gratitude. I will never allow you to slander him! Harry, Ron: You were all fooled by him! He is a big devil! He used alchemy to make Malfoy into the Philosopher's Stone! And colluded with Voldemort to sack Gringotts! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.