The Harry Potter Professor is Severus Snape, a 5-letter name. He is a half-blood wizard and Potions Master at Hogwarts School of Witchcraft and Wizardry. He is also the Head of Slytherin House and a member of the Order of the Phoenix. Snape is a complex character who is initially portrayed as an antagonist but later reveals himself to be a hero. He is known for his cold and sarcastic demeanor, as well as his loyalty to Dumbledore and his love for Lily Potter.