Answer:
The answer is Count Dracula, a character from a book or a movie.
Step-by-step explanation:
Count Dracula is the character in a novel by Bram Stoker. He is a vampire who drinks people's blood to stay young and strong. The character was based on a real-life prince call Vlad Tepes, famous for being violent with his victims.
Many movie adaptations about the character were made based on Stoker's novel. Also, vampires have become quite a common supernatural figure in films, Dracula being their archetype.
For all those reasons, taking the clues into consideration, and having in mind the letters already in place, the best answer seems to be Count Dracula.