Since I don't know the exact 'pickle man story', I can't say for sure. But it's likely the main character is the pickle man himself.
I'm not sure specifically what the 'pickle man story' is as there could be many different stories with that name. It might be about a man who has something to do with pickles, like he sells them or has a strange encounter involving pickles.
As we don't know the details of 'the man story', the main character is simply 'the man' in question.
In the story, the pickle represents a special find. It's like a little hidden gem on the Christmas tree. Finding it often means getting a reward, so it adds a sense of excitement to Christmas morning.
Since I don't know the exact details of the 'magic pickle graphic novel', I can only guess. Obviously, the magic pickle itself is likely a main character. There might also be a sidekick character, perhaps a small animal or another strange creature that helps the pickle on its adventures.
Since I don't know the exact 'lamppost man story', the main character is probably the man who is associated with the lamppost in some way.
Since we don't really know the specific 'hatchet man story', it's hard to say who the main character is. It could be the hatchet man himself, if the story focuses on his actions and motives.
The main character in the 'Lawnmower Man Story' is probably the man who mows the lawns. He is the central figure around whom the story revolves. Whether he's a simple working - class guy just trying to make a living or a more complex character with a backstory and dreams related to his lawnmowing job, he is the one the story is mostly about.
The main character in the 'whistling man story' is most probably the whistling man. However, depending on the nature of the story, there could be other important characters as well. For instance, if it's a story about how the whistling man's whistling affects those around him, there could be people in the community where he lives who are also important characters in the story. They might be initially annoyed by his whistling, or they might be intrigued and become his friends or followers. The whistling man could also have a backstory that involves other characters, like a mentor who taught him how to whistle in a special way or an antagonist who tries to stop him from whistling for some reason.
Since we don't know the specific 'a drowned man story', the main character is most likely the drowned man himself. He would be the central figure around whom the events of the story revolve.
As the title implies, the main character is the man in the tunnel.