Since I don't know the exact 'little black bull story', if it's a typical farm - related story, the main character would be the little black bull itself. There might also be the farmer who owns or takes care of the bull.
In the 'little black bull story', surely the little black bull is a main character. Depending on the nature of the story, there could be other animals like cows, horses, or sheep that interact with the bull. And there might be a herder or a caretaker who plays an important role in the bull's life. For instance, if the story is about the bull's growth on a ranch, the herder would be there to guide and protect it, making the herder a significant character as well.
Obviously, the main characters are the big bull and the little bull.
There are two main characters in the 'Black Bull of Norroway Story'. First is the young girl, usually the youngest daughter in her family. She is the protagonist who experiences all the adventures. Second is the black bull, which is a very important figure as it is the one that takes the girl on the journey to the new land and through all the challenges.
In some possible versions of the 'Black Bull Lover Story', there could be a group of villagers as well. They might not understand the special relationship between the lover and the black bull at first. So the main characters could include the lover, the black bull, and the skeptical or curious villagers.
The main characters are, as the title suggests, the old bull and the young bull.
There are also the other bulls in the field with Ferdinand. They are more typical bulls, interested in butting heads and showing their strength, which contrasts with Ferdinand's character. And don't forget the men who come to choose the bulls for the bullring. They play a role in the story as well.
The main character is Sambo, a little black boy. And there are also the tigers which play an important part in the story as the antagonists.
Obviously, the little black cat is one of the main characters. There might also be an owner if it's a domestic cat story.
The main character is the little black boy. His mother could be another important character. She might be the one who imparts wisdom and love to him, guiding him through the difficulties of life. His friends, too, would be main characters. They could be from different backgrounds, and together they might experience things like friendship, loyalty, and also face the challenges of a racially - divided world. There could be a teacher or an elder in the community as well, someone who provides mentorship or challenges the boy to grow and learn more about himself and his place in society.
The main character is surely the little black lamb. There might also be other lambs, and perhaps the shepherd who takes care of them.
The main character is of course the little black fish. It is the one that stands out and has its own adventures.