Severus Snape

""You dare use my own spells against me, Potter? Yes. I'm the Half Blood Prince.""

- ~Severus Snape

Severus Snape is a anti hero from the Harry Potter franchise. He was the Potion Teacher at Hogwarts School of Witchcraft and Wizardry and a double agent between Dumbledore's and Voldemort's sides, whose alliegance remains a mystery for the major part of the story. Although bitter, unfair and abusive, it is revealed that he was siding with Dumbledore since the murder of Lily Evans-Potter, the love of his life.

Childhood
During his childhood, Snape lived in the same village as the Evans. He one day dared to speak with the young Lily Evans (Harry's mother, who later married James Potter and got murded by Voldemort, while trying to protect Harry) with whom he was in love. He revealed that she was a witch and became her best friend, spending hours to describe the magical world to her.

Hogwarts Years
When he was a student at Hogwarts, Snape harboured a bitter and reciprocated hatred for the Marauders: James Potter (Harry's father), Sirius Black (Harry's godfather), Remus Lupin and Peter Pettigrew. Snape was sorted in the Slytherin house and eventually became friends with people like Bellatrix Lestrange and Lucius Malfoy and grew to share their extremist ideals, drifting away from Lily.

Teaching at Hogwarts
Snape taught Potions at Hogwarts and became the Head of Slytherin. Because of his hatred of James Potter, he also hates his son Harry Potter. (Who was a constant reminder of the loss of Lily's affection.) Snape always searched ways after ways to give Harry dentention. At the end of Harry's sixth year, he killed Dumbledore, headmaster of Hogwarts at the Astronomy Tower. Dumbledore fell from the tower. (This scene could be compered to The Lion King in which Simba's father, Mufasa, is thrown off a rock by his brother Scar.) Snape left Hogwarts together with Bellatrix, Draco Malfoy, Fenrir Greyback and others. But Harry then follows them and attacks Snape with one of the spells he read about in the potions book of the Half-Blood Prince. Snape dodges the spell and reveals to Harry that he is he Half-Blood Prince. This is because his father is a Muggle, which made him a Half-Blood Wizard, and his mother was called Eileen Prince.

Trivia
Snape is portrayed by Alan Rickman in the Harry Potter movies.