Since I haven't read it, I can only guess. Obviously, the grumpy old man is one of the main characters. There might also be people around him like his neighbors. If he has a family, family members could be main characters too, such as a son or daughter who has to deal with his grumpiness.
It could be that there's a local shopkeeper who has regular interactions with the grumpy old man. This shopkeeper could be a main character as they might have exchanges that show different aspects of the old man's grumpiness. Another possibility is a pet, if the old man has one. The pet could play an important role in the story and be considered a main character in a sense, as it might be the only thing the old man is affectionate towards.
There might be a young person, perhaps a new neighbor or a volunteer in the community. This young person could be a main character as they could be the catalyst for change in the grumpy old man's life. Their fresh perspective and energy could contrast with the old man's grumpiness and drive the story forward.
Most likely the main character is the grumpy old troll itself. There might also be some other characters like the people or animals that the troll interacts with, such as the villagers who try to cross the bridge that the troll guards.
In a 'grumpy old men story', the main characters are likely to be the old men who display their grumpiness in various situations. There might be a leading grumpy old man who is the central focus, and then there could be other old men around him who either support or oppose his grumpiness. There may also be characters like the young people in the neighborhood or family members who are affected by the grumpy old men's behavior, but ultimately, it's the old men that drive the story forward.
Well, without reading the specific 'the grumpy old man short story', it's hard to say exactly. But generally, it might be about an old man who is always grumpy. Maybe he has some reasons for his grumpiness like he's lonely, or things in his past have made him that way. He could be grumpy with his neighbors, family, or just people in general in the story.
Since it's called 'grumpy old men quarter story', the main characters are probably those grumpy old men. But without more details, we can't know if there are any other important characters like their wives, or some local shopkeepers who interact with them regularly.
The main characters would be the grumpy old men. They might be retired fishermen or just neighbors who are always grumbling about life. And then there are the three bears. They could be wild bears from the forest. The old men might interact with the bears in different ways, like the first old man being really scared of them, the second one trying to shoo them away, and the third one being a bit more curious about them.
The characters in the 'grumpy old men bacon story' are probably a group of old men. They might be retired and have a lot of time on their hands. One could be a former farmer who has strong opinions about bacon quality as he used to deal with pigs. Another might be a retired cook who is very particular about how bacon should be prepared. And there could be a third old man who just loves bacon but is always in a bad mood, and his friends' habits around bacon annoy him.
There was an old man, really grumpy. He sat on his porch all day, frowning at passersby. His neighbors were a bit scared of him. One time, a dog ran into his yard. Instead of being nice, he chased it away with a broom. But later, when the dog got lost, the old man was the one who found it and returned it to its owner. He had a heart deep down; he just didn't show it often.
Obviously, the waitress and the grumpy old war veteran are the main characters. There might also be some other minor characters like the cook in the diner where the waitress works or other regular customers who interact with them in some way.
The other important character is the marlin. It is a huge fish that Santiago catches. The marlin is strong and becomes the focus of Santiago's struggle at sea. And also, there is the boy, Manolin, who has a close relationship with Santiago. He helps Santiago sometimes and looks up to him as a mentor.
The main characters are clearly the old man and the tiger.