Harry's nemesis at school. Malfoy is a wealthy boy in Slytherin, from a prominent Wizarding family. Though he's always been power-hungry and cruel, this year he has the added benefit of being a prefect, which gives him the power to take House points from people he doesn't like. Though Malfoy certainly knows that Voldemort is back—his father, Lucius Malfoy, is a prominent Death Eater—he plays into Professor Umbridge's insistence that Voldemort isn't back and does everything he can to curry favor with her. When Umbridge forms an “Inquisitorial Squad” made up of students, Malfoy happily joins and abuses his power as a prefect even more. He's enraged with Harry at the end of the school year, as Harry's exploits at the Ministry land Malfoy’s father in Azkaban.