Sirius Black is a fictional character in J. K. Rowling's Harry Potter series, played by Gary Oldman. Black, also known as Padfoot or Snuffles (in his Animagus form) was a pure-blood wizard. He was born on 3rd November 1959. He was older son of Orion and Walburga Black i.e. Heir of the Ancient and Noble house of the Black and brother of Regulus Black. He was cousin of Bellatrix Lestrange (nee Black), Andromeda Tonks (nee Black) and Narcissa Malfoy (nee Black). He was Harry Potter's godfather. He was the best friends with James Potter, along with Remus Lupin and Peter Pettigrew. These four were known as the marauders in their school days, and created the Marauder's Map.
He, along with his three friends, belonged to Gryffindor house when at Hogwarts, unlike the rest of his family, who had belonged to the house of Slytherin. He disliked his family a lot, and ran away from home to James Potter's house when he was 16. The Potters took in Sirius as their own son. His prized possession in his childhood was a flying motorbike.
Sirius was an animagus and was able to transform into a big black dog ( a grim, which is an omen of death) at will.He along with James Potter and Peter Pettigrew became animagus to help Remus Lupin with his transformations. he escaped from the wizard prison, Azkaban after being kept there twelve years for a crime that he did not commit (the betrayal of James and Lily Potter ,the murder of Peter Pettigrew and 12 muggles with unknown curse). Harry found out, after a year of believing otherwise, that Sirius was an innocent man, and helped him evade capture from the wizarding government. Sirius went on the run before returning to his (empty) childhood home #12 Grimmauld Place and offered it up as headquarters for the Order of the Phoenix upon Voldemort's return. He was killed in a battle at the Ministry of Magic by his cousin, a Death Eater, Bellatrix Lestrange (nee Black) in Harry's 5th year at Hogwarts. Sirius Black is seen again in Harry Potter and Deathly Hallows , as he along with James Potter, Lily Evans Potter and Remus Lupin are resurrected with help of Resurrection stone.
He was last heir of The Ancient and Noble house of Black. The Black Lineage ended with Sirius Black, Draco Malfoy being head of Black house from his mother's side and Harry Potter as Sirius named his property to his godson
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