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
Ministry of Magic of the Ministry of Magic. At the beginning of the series, it is headed by Amelia Bones, who is replaced by Pius Thicknesse after Voldemort murders her. Thicknesse is replaced by Yaxley in "Harry Potter and the Deathly Hallows" after Voldemort has Thicknesse appointed the puppet Minister for his regime. Bartemius Crouch Sr. once headed the department, prior to the first book. By the events of "Cursed Child", Harry Potter has become its head. According to Rowling, this is the department that Hermione Granger joins, after the events of the seventh book, transferring from the Department for the Regulation and