Firenze is a centaur and, later in the series, a teacher at Hogwarts. He is described in the book as a blonde centaur with astonishingly blue eyes. He is quite good-looking, as many of the female population of Hogwarts are attracted to him. He first appears towards the end of Philosopher's Stone, in which he rescues Harry from Voldemort in the Forbidden Forest. Having carried Harry to safety on his back, Firenze is involved in an altercation with the other centaur residents in the forest, who object to the symbolic suggestion that centaurs are subservient to humans.
The character does not make another appearance until Order of the Phoenix, in which he is appointed by Dumbledore to teach Divination at Hogwarts in place of Sybill Trelawney, who had been sacked by Dolores Umbridge. For this, he is cast out of the centaur herd and attacked by his fellows, as Firenze ignored the centaurs' taboo on assisting humans because he felt he had an obligation to contribute to the struggle against Voldemort. In Half-Blood Prince he shares teaching duties with a reinstated Trelawney, because Firenze would have no place left to go, as he is an exile from his herd. In Deathly Hallows, he is seen near the end of the book fighting alongside the other members of the Hogwarts staff, helping to defend the school against Voldemort and his Death Eaters; it is mentioned that he was wounded on his flanks by the Death Eaters but ultimately survived the Battle of Hogwarts. Although not mentioned in the series, Rowling revealed that Firenze's herd is later forced to acknowledge that Firenze's pro-human leanings are not shameful and allows him back into the fold