Professor Severus Snape is Hogwarts' Potions teacher and the head of the Slytherin house. Snape has a habit of favouring Slytherin students over students from other houses, making the lives of Gryffindor students a living hell. But he also has a habit of making Harry Potter's life miserable whenever he can. He does not achieve it often, but he sure tries.

Snape's favourite student is Draco Malfoy, son of evil Death Eater Lucius Malfoy. He helps the boy in everyway he can if the prize is humiliating Harry and his friends (and also getting some more points for Slytherin, on account of the Cup of Houses).


ATTENTION: MAJOR SPOILERS from Books of the Harry Potter series

Even though Snape's got the perfect look and attitude to fit the big bad villain's part, he actually saves Harry's life on the first book. He gives Harry and his friends Hermione, Ron and Neville a hard time though. They hate him and are usually suspicious of him, even after the life-saving episode. The children are, of course, quite right to be suspicious.

On the fourth book, we find out he was one of the Death Eaters, the followers of Lord Voldemort, but only for a short time. He came back to the "good side" before Voldemort's fall and was a spy for the Ministry of Magic in the meantime. Voldemort's feelings towards Snape are not clear though, as the Hogwarts Professor becomes a spy for Dumbledore once more when the Order of the Phoenix returns in book 5. The author does not make it clear what kind of spy work Snape does nor if he even actually pretends to rejoin Voldemort. But Dumbledore keeps on trusting him and, in the end of Book 5, Snape actually tries to help Harry and Sirius before the whole Ministry of Magic tragic episode. Snape also becomes Harry's Occlumency teacher.

That's how we get a glimpse of Snape's years as a student at Hogwarts. He was the enemy of Sirius Black (Harry's godfather and best friend of James Potter, Harry's father), Remus Lupin, Peter Petigrew and James Potter himself. Sirius, who was one of the few to know that Lupin was a werewolf, tried to trick Snape into "bumping into" Lupin on a full moon. Obviously, after being saved by James Potter, Snape wasn't too happy about Sirius' clear attempt of murder. During one of the Occlumency's classes, Harry manages to see one of Snape's memories. J.K. Rowling also takes us thru an episode when Sirius and James taunt Snape for the (apparently) simple fact that he exists. Lily, future wife of James and Harry's mother, is seen to defend Snape and show deep anger towards James. However, Snape calls her mudblood and she becomes angry at all of them.

Snape was played on the Harry Potter movie series by brilliant english actor Alan Rickman. Rickman managed to *become* Snape so perfectly that it's hard to read the books and not visualize Rickman's face and style.

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