The main characters are Dina and the prince. Dina might be a girl from a humble background, full of dreams and hopes. The prince represents power and privilege. In the story, they may be joined by a magical creature, say a talking bird, which acts as a guide for them. And there could be a villain, like an envious noble who wants to stop any relationship between Dina and the prince from developing.
Another possibility is that Dina is a servant in the prince's castle. She catches the prince's eye because of her kind heart and unique charm. However, there are class differences and social barriers that they need to overcome. There could be court intrigue and jealous characters trying to keep them apart, but through their determination and true love, they find a way to be together.
There are mainly the princess, a young girl in a royal setting. And the frog prince, who starts as a frog but has the essence of a prince inside. There may be other minor characters like the king or servants in some versions, but the princess and the frog prince are the central figures in the original story.
Well, clearly the princess is a main character. She is often depicted as a young and somewhat spoiled girl at the beginning. Then there is the frog. He is not just an ordinary frog but a prince in disguise. There may be other minor characters like the king and queen in some versions, but the princess and the frog are the central figures around which the whole story revolves.
The main characters are Rapunzel, the prince, and the witch. Rapunzel is the girl locked in the tower with long hair. The prince is the one who falls in love with her. And the witch is the antagonist who keeps Rapunzel captive.
The dragon prince is surely a main character. Besides him, there could be characters from different species. For example, there might be a brave human who forms an unlikely alliance with the dragon prince. And perhaps there is an old and wise wizard - like character who provides guidance. There may also be some antagonists, like a power - hungry warlord who wants to take over the dragon prince's territory.
In the original Frog Prince story, the primary characters are the princess, a young and perhaps a bit spoiled girl who loves her golden ball. Then there's the frog, an unusual character that can talk and strikes a deal with the princess. And we have the king, the princess's father. He plays an important role in making sure the princess keeps her word to the frog, which ultimately leads to the frog's transformation into a prince.
The main character is the Prince of Thieves himself. He's the central figure, known for his thieving skills.
If it's a different '300 original story', perhaps the main characters are the leaders of the 300. For example, if it's a group on a quest, the ones who are in charge of leading the 300, making decisions, and guiding them through the various trials and tribulations would be the main characters.
In the original 'Alice's Adventures in Wonderland', the main characters are Alice, the White Rabbit, the Cheshire Cat, the Mad Hatter, and the Queen of Hearts.
The sad prince is the central figure in the story. There could be other characters such as the poor citizens in his kingdom. They are important as they are the ones whose suffering the prince witnesses. Maybe there is also a messenger or a court jester who adds some color to the story and helps to show different aspects of the prince's character through their interactions.