Since the title is 'the fat man horror story', the main character is likely the fat man himself.
If the 'fat man story' is about the Fat Man atomic bomb, then there isn't really a traditional 'main character' in the sense of a person. But if we consider the scientists and military personnel involved in its creation and deployment as key elements, then people like the physicists who worked on the Manhattan Project could be considered important. For example, J. Robert Oppenheimer was a significant figure in the development of the atomic bombs, including the one known as Fat Man.
Since I don't know the story in detail, I can't say for sure who the main character is. But from the title, it seems that the 'fat man' is likely to be the main character.
Well, from the name'magically blimped out fat man story', it seems that the central figure is the fat man. He is the one who has presumably undergone some magical change that has made him 'blimped out'. However, without more details about the story, we can't say if there are other important characters who interact with him or influence his situation.
The main character could be the thin man. He drives the horror in the story. He might be a figure that has been wronged in the past and is now seeking revenge in a terrifying way. Or he could be a pure evil entity that just enjoys causing fear and harm. Other characters in the story would probably be his victims or those trying to stop him, but the thin man would be at the center of the horror.
The main character in 'the laughing man horror story' is most likely the laughing man. He could be a complex character with a backstory that led him to become this source of horror. Maybe he was once a normal person who endured some great trauma that turned him into a terrifying figure. His actions, which are probably related to his laughter in a menacing way, would drive the plot of the story forward.
The main character is the Pale Man. He is the central figure that drives the horror in the story.
The main character is the crooked man, of course.
The main character is most likely the grinning man himself. He is the source of the horror in the story.
Most probably, it's the laughing man. Since it's a horror story named after him, he would be the central figure, driving the plot with his menacing actions and that spine - chilling laughter.
The main character is the Muffin Man. In the horror context, he becomes a source of fear. He could be a deranged baker with a twisted mind. Maybe he uses his muffin - making as a cover for his more sinister activities. He lures people, perhaps children, with the promise of delicious muffins, but in reality, he has much more malevolent intentions.