Ronald Bilius Weasley is a fictional character in J. K. Rowling's Harry Potter fantasy novel series. His first appearance was in the first book of the series, Harry Potter and the Philosopher's Stone, as the best friend of Harry Potter and Hermione Granger. He is a member of the Weasley family, a pure blood family that resides in "The Burrow" outside Ottery St. Catchpole. Being the only member of the three main characters raised in magical society, he also provides insight into the Wizarding World's magical customs and traditions. Along with Harry and Hermione, he is a member of Gryffindor house and is present for most of the action throughout the series. Ron was portrayed by Rupert Grint in all eight Harry Potter films.

Harry Potter and the Philosopher's Stone is a fantasy novel written by British author J. K. Rowling. The first novel in the Harry Potter series and Rowling's debut novel, it follows Harry Potter, a young wizard who discovers his magical heritage on his eleventh birthday, when he receives a letter of acceptance to Hogwarts School of Witchcraft and Wizardry. Harry makes close friends and a few enemies during his first year at the school and with the help of his friends, Ron Weasley and Hermione Granger, he faces an attempted comeback by the dark wizard Lord Voldemort, who killed Harry's parents, but failed to kill Harry when he was just 15 months old.