There could be other characters like the little dragon's parents or siblings. If it's a more complex story, there might be a human character who befriends the little dragon.
The two main characters are surely the little wizard and the dragon. The little wizard might be a young and inexperienced spell - caster, full of curiosity and a thirst for adventure. The dragon could be a majestic and fearsome being, perhaps with unique powers like breathing fire or flying at great speeds. There could also be other characters in the periphery, such as the wizard's mentor who may have given him some initial guidance before he set off on his adventures with the dragon, or local villagers in the magical land who are either in awe of or afraid of the dragon and the wizard's presence.
Again, without more details, it's hard to say. But there could be the little dragon itself, of course. Maybe there's a dragon mother or father. There might also be other animals like rabbits or squirrels if it's a story set in a forest - like environment.
The main character is obviously the little dragon boy. There might also be his family members, although they may not be present throughout the story if he is on a solo adventure. Sometimes, there could be a mentor figure, like an old dragon who imparts wisdom to the little dragon boy.
I don't have enough details about 'the little story' to say for sure, but it could be a child, a pet, or an old wise man.
Since I don't know the details of this 'never ending dragon dragon story', I can't say for sure. But it's likely that the main characters would be dragons. There might be a heroic dragon, a wise old dragon, or a young and adventurous dragon.
In the chicken little characters story, the key character is Chicken Little, the one who believes the sky is falling. Another important character is Foxy Loxy, a rather sly animal. There are also other barnyard animals like Henny Penny and Ducky Lucky who are involved in Chicken Little's adventure when he spreads the word about the sky falling.
I'm not sure who the main characters are in 'the dragon boy story' since I haven't read it. But I assume the dragon boy himself is a main character, and probably there are some dragons too.
The main characters in 'the friendly dragon story' are likely to include the dragon, of course. There might be a group of children who find the dragon in a forest or a hidden place. One of the children could be the leader of the group, who has the courage to approach the dragon first. There could also be a villain in the story, perhaps a hunter who wants to capture the dragon for some wrong reasons, and the other characters have to protect the friendly dragon from this threat.
The boy and the dragon are the key characters. The boy could be a normal kid from a small village. He might be an outcast or just someone with a big heart and a sense of adventure. The dragon, on the other hand, could be a wise and ancient creature. It might have its own secrets and a past that unfolds as the story progresses. Their interactions and how they influence each other are what drive the story forward.
In the best dragon story, apart from the dragon and the hero/heroine, there might be other important characters. There could be a wise old mentor who gives advice to the hero on how to deal with the dragon. Maybe there are also some sidekicks, like a loyal dwarf or an agile elf who help the hero in his or her quest. These characters all interact with the dragon in different ways, which makes the story interesting.