Professor McGonagall



Professor Minerva McGonagall is a Hogwarts' teacher and is the Head of Gryffindor. She is very strict of the rules but kind and has the ability to transform into a cat.

Stone
Professor McGonagall first appears when Dumbledore drunkenly mistakes a cat for her. McGonagall finds this amusing, and walks with Dumbledore as Hagrid flies down on his motorbike. However, he crash lands into a garden and jokingly gives McGongall flowers before giving the baby Harry Potter to Dumbledore.

She also appears at Hogwarts', as the Transfiguration teacher and the Deputy Headmistress.

Chamber
McGonagall also appears when the Chamber of Secrets was opened and people started getting petrified. She is shocked by it, and when Dumbledore is arrested, McGonagall is briefly in charge. She discovers Dumbledore's secret Firewhiskey horde and steals it, putting it in her classroom.

Unfortunately, Crabbe and Goyle find the horde and drink it all, becoming extremely drunk and feeling very overheated. When they eat a pair of floating cupcakes, bewitched and filled with strong rum to knock them out, they are completely unconscious. The next day, the two have a massive hangover, leading Snape and McGongall to both put them in detention for three months.