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.
Since I don't know the exact 'frog graphic novel', it's hard to say. But most likely the frog itself is a main character. There could also be other animals like a wise old turtle or a friendly squirrel that help or interact with the frog.
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.
There are two main characters in the Frog King story. First is the princess. She is a bit of a spoiled girl at first, but she learns to keep her word. The other main character is the frog. He is under a spell which turns him into a prince at the end. He is helpful and persistent in getting the princess to fulfill her promise.