Obviously, the little green pig is one of the main characters. It's the one that the story is centered around.
Perhaps there are also some human characters in the story. If it's a story where the pigs interact with the human world, the humans could be important characters. They might be the ones who first notice the little green pig's difference and react in different ways, which drives the plot forward.
In the 'little pig little pig story', the key characters are, of course, the little pigs. There are usually three of them. Each pig has its own personality which is reflected in how they build their houses. And then there is the big bad wolf. He is the antagonist. He is very sly and tries to catch the pigs for his meal. These characters together create the classic plot of the story.
Well, typically, in the little pig story, the little pig is the central figure. There might also be other characters like the big bad wolf in some versions. The little pig is often portrayed as a cute, innocent and sometimes clever character, while the wolf is the antagonist, representing danger and threat to the pig.
There are three little pigs, each with their own approach to building a house, and the big bad wolf. The pigs are different in their work ethic and decision - making when it comes to building shelters. The wolf, on the other hand, is the threat to the pigs' safety. He is greedy and uses his strength to try and get to the pigs.
The main characters are the three little pigs and the big bad wolf. The three little pigs are the protagonists who are trying to build their homes and protect themselves. The big bad wolf is the antagonist who tries to blow down their houses and eat them.
In the little green pig story, the moral could be related to perseverance. The little green pig may face challenges because of being different. But if it perseveres through those difficulties, it can show that we should also keep going in the face of adversity, not let others' opinions stop us from being who we are.
Most likely, the main characters would be the fourth little pig, and probably the big bad wolf as in the original three little pigs story. There could also be the other three little pigs if they play a part in the story, either as friends or as characters that the fourth pig interacts with in some way.
Since I don't know the exact 'little pig market story', I can only guess. There are probably little pigs as main characters. Maybe there is a brave little pig who is not afraid to explore the market. And there could be an older, wiser pig who gives advice to the younger ones.
Since I don't know the story, it could be the owner of the little green tractor. Maybe it's a farmer.
Since we don't know the exact story, it's hard to say for sure. But likely the little green snake is a main character. There could also be other animals like mice if it's a predator - prey kind of story, or perhaps a wise old owl that gives advice to the snake.
Since I don't know the story, I can only guess. The main character is surely the little green dinosaur. There might also be other dinosaurs, like its parents or siblings.