The two main characters are Bunny and Jack. Bunny is likely to be a character with a nurturing side, as it is giving Jack a bath. It could be a small, furry bunny with big ears and a bushy tail. Jack could be any kind of character, perhaps a little boy or another animal. But regardless, it's Bunny's actions towards Jack that form the core of the story in this fanfic.
In this fanfic, perhaps the bunny is known for being very tidy and clean. When it sees Jack looking all grubby, it just can't resist helping. The bunny first has to convince Jack to take a bath, as Jack might be a bit reluctant. Once in the bath, the bunny uses special soaps or herbs that it has collected. There could be some comical moments like Jack splashing water everywhere or the bunny getting a bit wet itself. But in the end, Jack comes out clean and smelling fresh, and they both feel closer as friends.
The main character is most likely the cyborg bunny itself. But there could also be other characters like the scientist who created it, if that's part of the story. There might be some friends or foes of the cyborg bunny, such as other animals in the area who are either intrigued or threatened by it.
Maybe it's his father who gives the boy a bath in this story. Sometimes fathers like to be involved in taking care of their kids in this way too.
In this fanfic, Harry Potter is the protagonist. He is the one with the idea of giving the troll a job. The troll is the main character as well, as the story focuses on its new life with a job. Additionally, Dumbledore might be involved. He could be either supporting Harry's decision or warning him about the potential risks of having a troll in a certain role at Hogwarts.
The Cullen family members are also key. Carlisle, as the patriarch of the vampire family, would be involved in the medical aspects of Bella's pregnancy and birth. Esme, with her motherly nature, would be there to support Bella. Alice, with her ability to see the future, could be crucial in predicting any problems during the birth. Jasper, too, would be part of the family's support system, even if his power of influencing emotions might not be directly related to the birth.
The main characters are obviously Harry and Teddy. Harry Potter, the famous wizard who defeated Voldemort, and Teddy Lupin, the son of Remus Lupin and Nymphadora Tonks. Harry is likely in a mentoring role here, while Teddy is the recipient of whatever knowledge or advice Harry is giving.
Aphmau herself is obviously a main character. Aaron is often another important character as he is her significant other in the Aphmau series. He would be there to support Aphmau during the birth process. Also, her friends like Katelyn and Kawaii - chan might be present, offering their own unique forms of help and adding to the story's charm.
Jack is likely to be a character who brings a human perspective into the story. He might be an adventurer or someone with a great deal of tenacity. Megatron, on the other hand, is a complex character. He is a powerful robot with his own goals and desires, which often put him at odds with others. In this fanfic, their interactions will be the central focus as they are the main characters.
Well, clearly the main characters are Jack and Johnny. They are the focus of the fanfic.
Perhaps in the fanfic, the Easter Bunny gets lost in Jack Frost's frozen world. Jack Frost initially teases the Bunny but then realizes the Bunny is in danger. He helps the Bunny find his way back home. Along the way, they learn about each other's powers and cultures. The Bunny shows Jack Frost the beauty of new life that comes with Easter, and Jack Frost shows the Bunny the wonder of his ice sculptures.