Sirius Black was one of the most important people in Harry Potter and the Philosopher's Stone was published? Rowling introduced readers to the Wizarding World in 1997, and continued exploring it with six more novels that followed the story of “the boy who lived” and the darkest wizard of all, Lord Voldemort.
Harry Potter didn’t have an easy life: following the murder of his parents when he was one year old, he was sent to live with his aunt and uncle, who were never nice to him. Harry then learned he was a wizard (as were his parents), and began to attend Hogwarts School of Witchcraft and Wizardry, where he also encountered a lot of obstacles and enemies. Harry eventually formed his own family thanks to his friends, but before that, readers witnessed another big loss in Harry’s life when his godfather and guardian, Sirius Black, was killed in Harry Potter and the Order of the Phoenix.
Sirius Black became a very important person for Harry and one of the most beloved characters in the series, and Rowling knew exactly where she was going with him, so much that he was casually mentioned in the first book.
Harry Potter: Philosopher’s Stone’s Sirius Black Reference Shows How Much Rowling Had Planned
In Peter Pettigrew and confronted him on a city street, causing an explosion that killed various muggles. As a result, he was sent to Azkaban.
Sirius made his first proper appearance in the third book, Harry Potter series is written in a way that encourages re-reading, so the audience can catch all those little details and bits of foreshadowing and better piece everything together, as many of these (such as that Sirius Black reference) will surely go unnoticed the first time they read the books.
