Obviously, there is the greedy king. There might also be his servants or advisors who either enable his greed or try to stop it. And of course, his subjects, the common people in his kingdom, would be important characters as they are affected by the king's greedy actions.
The main character is the Greedy King. In addition to him, there might be his family members. For example, a queen who might try to influence his actions, either towards more greed or towards reform. There could be his children who may be heir to his kingdom and whose future is affected by his greed. Then there are the nobles in his court. Some of them might be in cahoots with the king in his greedy undertakings, while others might be secretly plotting against him because of his excessive greed which is harming the kingdom as a whole.
The main character is the greedy king. He is the central figure around whom the story revolves. There could be courtiers in the story as well. These courtiers might be sycophants who fuel the king's greed by constantly flattering him and suggesting ways to amass more wealth or power. There might also be a character like a wise old man who tries to warn the king about the consequences of his greed.
Obviously, the main character is the greedy boy. But there could also be other characters like his parents, who might be trying to teach him not to be so greedy. Or his friends who are affected by his greedy behavior.
The central character is the greedy boy. In addition, there might be characters like his neighbors. If the boy is greedy about property or toys, his neighbors might be the ones who notice his behavior and react to it. There could also be a teacher - like figure, maybe a priest or an elder in the community who tries to instill good values in the boy and help him overcome his greed.
Since I'm not aware of this story, it's hard to determine the main characters. But we can assume that the greedy king himself is a main character. There might also be characters like his advisers, who could either encourage his greed or try to stop him. And his subjects would also be important characters as they are the ones affected by the king's greed.
The main idea is usually about a king who is overly greedy. He might want more land, more wealth, or more power than he actually needs. This greed often leads him into trouble, like making bad decisions that affect his kingdom and its people.
Obviously, there is the greedy hippo. There may also be other animals that interact with the hippo, like zebras or giraffes.
The characters are simply three friends who are characterized by their greed.
I'm not sure specifically as you haven't provided the details of the story. But generally, they would be the so - called 'greedy friends' which could be two or more individuals whose actions are driven by greed.
The main character is Little Miss Greedy.