If we consider Carmilla as the 'first female vampire story', then Carmilla herself is the main character. She is a seductive and menacing vampire who targets young women.
If it's about Lilith in some sense, Lilith is the central figure. She has a complex nature, being both a symbol of female independence in some views and a somewhat dark and vampiric - like entity in others.
The main characters in the first vampire story are likely to include the vampire itself. It could be a person who has made a pact with the devil or been cursed in some way. Then there are the victims, who are usually unaware of the danger until it's too late. And there might be a character who discovers the truth about the vampire, like a doctor or a scholar, and decides to take action against it.
Often, the main character in the first original vampire story is the vampire itself. It's the central figure that drives the horror and the plot. There might also be a victim or a potential victim who is trying to escape the vampire's clutches.
In some vampire origin stories, it's a man named Vlad Tepes. He was a cruel ruler in Romania. His brutal deeds and his habit of impaling his enemies led to the creation of the Dracula legend, which is closely related to the vampire origin. His reputation for blood - thirstiness made him a prime candidate for the first vampire - like figure in European folklore.
In many first vampire hunter stories, the vampire hunter's mentor, if there is one, can be a very famous character. This person has passed on the knowledge and skills to the hunter, and their backstory and wisdom can make them quite well - known within the context of the story.
I don't know the specific main characters in 'First Bite Vampire Love Story' as I haven't read it. But usually, there would be a vampire character, probably male or female, who is the love interest. And there would be a human character as well, who gets involved in this vampire - centered world.
The first vampire story is often attributed to John Polidori. His work 'The Vampyre' is considered one of the early examples.
The first vampire story was written by John Polidori. His work, 'The Vampyre', is considered a pioneering piece in vampire literature.
The creator of the first vampire story is not clearly defined. Different cultures and literary traditions have their own early vampire-like tales.
As I said before, without more details, it could be different characters depending on the context. It could be Adam if it's a religious context. Or it could be someone like Neil Armstrong if it's about the first man on the moon.
There are many possibilities. If it's a fantasy - mystery story, the main character could be a young wizard or sorcerer who discovers the mystery. Or if it's a mystery in a historical setting, it might be an archaeologist or historian. Without more context about the 'first mysterio story', it's difficult to determine the main character precisely.