[Death by Mirrors]

That probably came from some characters being total stereotypes. Granted, I stopped reading after the first few books, but Draco for example always came across to me like your typical run-of-the-mill haughty snob bully. Are there even canon Slytherins with personality? (Not neccessarily in a "people I want to be friends with" way, but "well-rounded and understandable in their actions")