The kidnapped victim could be the main character. They would be the focus as they struggle against Jeff. For example, it could be a young girl who shows great courage throughout the ordeal.
It could be a detective or a police officer who is determined to solve the case of the kidnapping by Jeff. They would be the one leading the investigation and eventually confronting Jeff. This character would bring a sense of justice and order to the otherwise chaotic and terrifying story.
There could be his victims. They might not recognize him at first when he turns into a girl and he could use this to get closer to them. Another character could be a mysterious figure who either caused the transformation or is trying to help Jeff reverse it.
The main character is Jeff. He is a deranged and extremely dangerous killer.
Sometimes, other killers or creepy characters from the same horror universe might make an appearance. They could either be allies or enemies of Jeff, adding more complexity to the story and the exploration of Jeff's insanity.
Well, Jeff the Killer is surely a main character. There could also be a made - up character who is the other half involved in the pregnancy. And perhaps there are some side characters like friends or foes of Jeff who play important roles in how the pregnancy unfolds and how they react to it.
Well, in this type of fanfiction, perhaps the victim discovers that Jeff has a weakness during the kidnapping. It could be something psychological. And then they use that knowledge to try and escape. Or, it could be that Jeff has some sort of ulterior motive for the kidnapping other than just causing harm, like he needs the victim for some dark ritual.
Well, clearly Jeff is the central character in 'Jeff the Killer the story'. There might be other characters like his family members who are sort of in the background, but Jeff is the one the whole story revolves around. He is the one whose actions drive the horror in the story.
Jeff is a character who has a dark backstory that led him to become a killer. In the fanfiction, he is the object of Nina's affection. Nina, she's not just a sidekick. She has her own motives and actions. She might try to change Jeff or just be with him no matter what. Their relationship and their individual personalities are what drive most of the stories in this fanfiction.
Well, one common character is a female love interest. She could be a strong - willed person who is initially scared of Jeff but then gradually falls in love with him. There might also be a sidekick - type character for Jeff, someone who has known him for a while and tries to warn the love interest about Jeff's true nature. And in some fanfictions, there could be a detective - like character who is trying to solve the mystery of Jeff's killings while also getting involved in the love story. This character might be suspicious of the relationship between Jeff and the love interest and tries to break them up for the sake of safety.
Another option could be a fellow 'dark' character. Let's say a female vampire who is also used to being feared and alone. They could meet in the shadows of the night and initially be wary of each other. But as they discover their similarities, like their thirst for something (Jeff for bloodlust and the vampire for blood), they start to form a bond that turns into a romantic relationship.
The main characters are obviously Jeff the Killer and Jane the Killer. Jeff is known for his pale, scarred face and his love for killing. Jane, on the other hand, is often portrayed as his rival or someone with a complex relationship to him in this fanfiction context.