Professor Vampire.

Professor Vampire by Hong Tao Zhang introduces a thousand-year-old vampire to Hogwarts, instantly dwarfing the wizarding world's existing threats with his ancient and formidable presence. This thrilling fantasy hilariously and terrifyingly disrupts the established magical order. Dumbledore, accustomed to Voldemort as the ultimate evil, faces an even more ancient threat in Dracula. However, this confrontation isn't with a dark curse, but with legal documents. Dracula, holding the deed to Hogwarts, declares its lease has expired after a millennium. His demand is not conquest, but something peculiar: "Anything interesting." In an unexpected turn of events that shakes the enchanted halls, the vampire then targets the position of Defense Against the Dark Arts professor.