The Potions teacher at Hogwarts and Head of Slytherin House. Snape detests Harry, believing that Harry is very arrogant (an attitude that is only reinforced by Harry and Ron’s arrival via flying car). This dislike carries over to the rest of the Gryffindors, while he favors the Slytherin students like Draco Malfoy. He also takes an instant dislike to Gilderoy Lockhart, whom he believes to be a pompous fraud, and takes great relish in disarming Lockhart during their demonstrations at the dueling club.