Hermione Granger completing Snape's homework assignment from the class, while Crookshanks proves vital in exposing Scabbers as Peter Pettigrew, a friend of James and Lily Potter who revealed their whereabouts to Lord Voldemort the night of their murders, and was able to wrongly implicate Sirius Black (revealed to be Harry's godfather) in the Potters' deaths. The Time-Turner enables Hermione and Harry to rescue Sirius and the hippogriff Buckbeak. Hermione is horrified by the cruelty that house-elves suffer, and establishes S.P.E.W., the Society for the Promotion of Elfish Welfare, as an effort to gain basic rights for them. She is Bulgarian Quidditch prodigy
Harry Potter (character) becomes fast friends with classmates Ron Weasley and Hermione Granger, and foils Voldemort's attempt to steal the Philosopher's Stone. He also forms a rivalry with characters Draco Malfoy, a classmate from an elitist wizarding family, and the cold, condescending Potions master, Severus Snape, Draco's mentor and the head of Slytherin House. Both feuds continue throughout the series and are settled at the series's end (Draco's in the West End play Harry Potter and the Cursed Child and Snape's on his deathbed in Harry Potter and the Deathly Hallows. In a 1999 interview, Rowling stated that Draco is based on several