The frog is likely the central character in this 'castle in the darkness frog story'. In addition, there could be characters such as a sly rat that tries to mislead the frog, a noble owl that serves as a guide or protector, or a group of tiny mice that the frog befriends and who help it navigate the complex and dark passages of the castle.
The main character is surely the frog. However, depending on the nature of the story, there could be other important characters. For example, if it's a story about the frog's journey to break a curse on the castle, there might be an old wizard who put the curse in the first place or a friendly fairy who gives the frog advice on how to deal with the situation. There could also be some sort of antagonist, like a giant snake that guards a particular area of the castle.
I'm not sure specifically as it's not a very common well - known story. It could be about a frog that has an adventure in a castle in the darkness. Maybe the frog encounters various challenges or discovers secrets within that dark castle.
I'm not sure specifically without more details about this story, but it could be an adventurer who dares to enter the cave to explore the castle. Maybe there's a wizard or a guardian protecting the secrets of the castle within the cave.
Maybe there's a princess who is a main character in 'castle story'. She could be the one in need of rescue or the one who holds the key to some mystery within the castle. There might also be an evil wizard or a cunning thief as main characters, depending on the nature of the story.
The Frog Prince is also a main character. He is under a spell and needs true love's kiss to break it. He has his own charm and through his adventures with Tiana, he changes and grows.
The two main characters are the frog and the scorpion. The frog is kind - hearted enough to offer to help the scorpion cross the river. However, the scorpion has a stinging nature which ultimately leads to a tragic end for both of them.
Clearly, it's the boy, who is probably curious or adventurous, and the frog, which is an interesting little creature that might be in the boy's path. The boy could be of any age really, and the frog is just a typical frog you'd find in a pond or a garden perhaps.
The main characters are the scorpion and the frog.
As I don't know the story well, I assume the main characters would be the frog parents and their baby frogs.
The little frog is definitely one of the main characters. There might also be other animals like a big fish if the frog lives near a pond, or a bird that the frog interacts with.
The two main characters are the boy and the frog. The boy is likely a curious or kind - hearted human, while the frog is an amphibian that has some sort of interaction with the boy, like they might go on an adventure together or help each other out.