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Insert informational text here to look smart and for people who don't know who Severus Snape is which would be very weird indeed to not know who Severus Snape is as Severus Snape is a very important character in Severus Snape's appearance in Harry Potter and Severus Snape and other stuff.
Severus Snape is a fictional character in the Harry Potter book series written by J.K. Rowling. In the first novel of the series, he is hostile to Harry and is built up to be the primary villain until the final chapters. As the series progresses, Snape's character becomes more layered and complex. Rowling does not fully reveal the details of his true loyalties until the end of the final book, Harry Potter and the Deathly Hallows. Snape appears in all seven novels of the series.
Over the course of the series, Snape's portrayal evolves from that of a malicious and partisan teacher, to that of a pivotal character of considerable complexity and moral ambiguity. Snape primarily teaches Potions at Hogwarts, though in the sixth novel he teaches Defence Against the Dark Arts, a position which he was known to have desired throughout the series. He ultimately becomes Headmaster of Hogwarts in the final novel. Rowling has described him as "a gift of a character".
