Since it's the 'Shrinking Man Story', the main character is most likely a man who experiences the shrinking phenomenon.
The main character in the 'Shrinking Man Story' is a man. However, we don't know much about him other than he is the one who shrinks. He could be an ordinary man with an ordinary life until this strange event occurs that turns his world upside down.
Since we don't have the actual story, it's hard to say for sure. But based on the title, the main character is likely the shrinking man.
The main character is the man who is shrinking. There may also be his family members or friends who are part of the story, though the focus is mainly on the man's experience as he shrinks.
Since I don't know the exact story, it's hard to say. But it's probably the woman who is shrinking.
Based on the title, it seems the main character is the woman who is shrinking. Presumably, she is the one around whom the story revolves.
In the 'slow shrinking woman story', the main character is likely the woman herself. She is at the center of the story as her shrinking is the main plot device. There could be other characters around her, like her family or friends who might react differently to her situation. Her family could be in a state of shock and try to find solutions, while her friends might distance themselves out of fear or confusion. All these interactions would revolve around the main character, the shrinking woman.
There could be other characters too. Maybe there's a friend or a family member who witnesses the changes in the woman and the man. However, the central characters are probably the growing woman and the shrinking man as they are the ones whose growth and shrinkage form the core of the story.
The main character is obviously the man who is shrinking. There may also be his family members, like his wife who would be deeply affected by his strange transformation. She might be worried about him and try to find a way to reverse the shrinking process.
Often, the main character is an ordinary man. He could be a scientist who accidentally shrinks himself during an experiment, like in many traditional science - fiction shrinking stories.
Most likely, the main character is the woman who has the encounter with the laundry detergent and shrinks. But we can't rule out the possibility that there could be other important characters. For example, if it's a story about finding a cure for her shrinking, there could be a scientist character. Or if it's a story set in a family context, her family members could also play significant roles, but the woman who shrinks due to the laundry detergent is the central focus based on the title.
The main character is the girl who is being affected by the slowly shrinking ray.