There could be other animals too. Maybe a wise old owl that gives advice to the upside - down mice. And perhaps a curious rabbit that always follows the mice around to see what they'll do next.
Obviously, the upside - down mice are main characters. They must have unique personalities and behaviors due to their upside - down state.
Well, perhaps there could be a plot where the upside - down mice have to adapt to a world that's topsy - turvy for them. Maybe they find unique ways to build their nests or find food in this strange state.
I don't know for sure, but there must be the upside - down boy himself. There could also be his family members, like his parents or siblings, who might be affected by the boy's upside - down situation or might be trying to help him.
Since it's an 'upside down magic novel', the main characters could be those who are either born with or acquire this strange 'upside down magic'. There might be a character who is initially confused by their powers but then learns to embrace them. And there could also be some sort of mentor figure who tries to guide them in understanding and using this unique magic. There might also be antagonists who oppose the main characters because of their 'upside down magic', seeing it as a threat to the normal order of magic.
Obviously, the three blind mice are important characters. There might also be a farmer's wife as she is often associated with the three blind mice story. And there could be other animal characters in the other stories, such as squirrels, rabbits, birds, etc. Each of these animals would play different roles, like the squirrels might be the hoarders, the rabbits the timid ones, and the birds the messengers perhaps.
Since I don't know the exact story, it's hard to say for sure. But it's probably a boy who is in some sort of 'upside down' situation.
Obviously, the little black puppy is a central character. But there could be other characters such as a wise old owl that gives advice to the puppy, a playful rabbit that the puppy chases around, and a mother cat with her kittens that the puppy befriends. All these animals play different roles in the stories, adding more colors and fun to the plot.
It's also possible that there are some human characters in the book, if it's a collection of stories that involve the interaction between the animal world and the human world. For example, a kind farmer who accidentally disturbs the mole's home while plowing his field, and then tries to make it up to the mole in some way. This kind of character can introduce a different dimension to the stories in 'The Mole and Other Very Short Animal Stories'.
I'm sorry, I don't know who the author of 'a life upside down novel' is. There are so many novels out there and without more information, it's hard to determine the author.
Since I don't know the details of 'the upside original story', I can't say for sure who the main characters are. It could be ordinary people trying to make a difference, or perhaps it has a central character who is on a quest for something positive.
In 'The Upside: A True Story', the key characters are a quadriplegic man who has a lot of wealth but lacks the physical ability to fully engage with life on his own. And then there is his caregiver. The caregiver is someone who is probably more down - to - earth and has his own set of life experiences. Their interactions, differences, and the bond that they form over time are what drive the story forward.