Little Miss Brainy is the central character. There may also be her friends or neighbors in the story who interact with her. They are important as they provide the situations in which Little Miss Brainy can show off her smarts and also be helpful to them.
The main character is obviously Little Miss Brainy herself. She's the one who drives most of the action with her intelligence.
Well, in the 'little miss brainy story', Little Miss Brainy is known for her intelligence. She often uses her smarts to solve problems in her little world. For example, when her friends are faced with a difficult task like building a complex structure, she comes up with a brilliant plan on how to do it efficiently. She also helps others understand things they find confusing, like math or how things work in nature.
The main character is Little Miss Greedy.
I assume Little Miss Sunbeam is the main character. There may also be her family members, friends or neighbors who interact with her in the story.
In the 'little miss princess story', the little miss princess is the central figure. Alongside her, there could be her parents, the king and queen, who play important roles in her upbringing and the running of the kingdom. There may be a group of animal friends, like a talking squirrel or a magical unicorn, that she befriends and they join her on her adventures, adding an element of fun and mystery to the story.
In 'little miss spider story', the most prominent character is the little spider. But there could be other supporting characters as well. For instance, a motherly beetle that gives advice to the little spider or a group of busy bees that the spider watches from her web. These characters help to create a more complete world for the little spider's story.
In the 'little miss sparkle story', surely Little Miss Sparkle is a main character. There could be a wise old owl that serves as her guide. The owl might give her advice on how to use her sparkle and where to find more about its origin. Another possible main character could be a mischievous little boy who at first is jealous of Little Miss Sparkle's sparkle but later becomes her friend and helps her in her adventures.
I don't really know the main characters in 'little miss trouble story' since there's not much information given. But it could be the little miss trouble herself as the main character.
The main characters are Little Miss Moppet, who is a cat, and the mouse.
There is Olive, the little girl who is going to the beauty pageant. Then there's her father Richard, who is a motivational speaker. Her mother Sheryl, and her brother Dwayne, who has taken a vow of silence until he can achieve his dream of becoming a pilot. Also, there's the grandfather, who has some wild habits but also a lot of wisdom.
As I don't know the exact 'little miss fickle story', I assume the main character is Little Miss Fickle herself. There might also be some supporting characters like her friends or family members who are affected by her fickle behavior.